The plaintiff in this declaratory judgment action, AMCO Insurance Company, is the insurer on a casualty policy covering the home of defendants, Randy and Rhonda *711 Stammer. The policy extends to fire loss but does “not provide coverage for any insured who has intentionally concealed or misrepresented any material fact or circumstance relating to this insurance.” Both Randy and Rhonda qualify as an “insured” within the policy. On June 12, 1983, fire extensively damaged the Stammers’ home and its contents. All parties agree that the fire was the result of arson. On October 25, 1983, AMCO initiated this aсtion for declaratory relief alleging that both Randy and Rhonda were responsible, either directly or indirectly, for the arson and that both Randy and Rhonda had falsified statements and acted fraudulently in connection with their claim against AMCO. The declaratory judgment petition requested the district court to declare that AMCO had no remaining duties under the insurance contract to the Stammers and that the Stammers had no rights enforceable against AMCO. On November 21, 1983, the Stammers filed their answer.
Subsequently, the Stammers filed both a motion for leave to amend their answer and a motion for partial summary judgment. The district court granted the former motion, and the Stammers amended their answer so as to add a breach of contract claim on behalf of Randy and Rhonda and three tort claims on behalf of Rhonda alone. The motion for summary judgment alleged that AMCO had a duty under the policy to pay Rhonda for any property losses, expenses, or costs she incurred because of the fire. This motion was denied on September 10, 1984. On November 26, 1984, AMCO filed a motion for summary judgment with respect to the three tort counterclaims raised in the Stammers’ answer. This motion was granted on January 28, 1985.
Trial to a jury commenced on September 27, 1985. A verdict in favor of AMCO was returned on October 3. Following an unsuccessful motion for new trial, the Stammers filed their notice of appeal. In this appeal, the Stammers challenge the summary judgment rulings made by the district court and allege several errors made during the course of trial. Our review is limited to the correction of errors at law. Iowa R.App.P. 4.
I.
The Stammers contend the district court erred in denying their summary judgment motion on the question of AMCO’s contractual duty to Rhonda. In her affidavit given in support of the summary judgment motion, Rhonda denied all allegations made against her in AMCO’s petition. The Stammers’ argument on this point is essentially limited to an attack on the sufficiency of an affidavit offered in support of AMCO’s resistance to the summary judgment motion. We think this argument places the cart far ahead of the horse.
The purpose of a summary judgment is to avoid a trial where no genuine issue of material fact exists.
Neoco, Inc. v. Christenson,
*712
A motion for summary judgment is not supported as required by rule 237 unless the movant meets his or her burden to show there is no genuine fact issue.
Daboll v. Hoden,
II.
The appellants next maintain the district court erred in eliminating, by way of summary judgment, the three tort counterclaims made by Rhonda in appellants’ amended answer. Those counterclaims alleged causes of action based upon threе theories: (1) a first-party bad faith tort; (2) ex delicto tort; and (3) abuse of process. These claims by Rhonda are all grounded in Rhonda’s contention that she is an innocent co-insured, that no credible evidence to the contrary exists, and that AMCO’s failure to pay benefits to her constitutes a tort.
A.
The courts of this state have never recognized the first-party bad faith tort alleged by Rhonda here.
E.g., Hoekstra v. Farm Bureau Mut. Ins. Co.,
Whatever the precise parameters of a first-party bad faith cause of action, assuming our supreme court chooses eventually to recognize such a tort, situations presenting a “fairly debatable” claim lie unequivocally outside the theory’s ambit.
E.g., Pirkl,
B.
The district court also granted AMCO summary judgment on Rhonda’s ex-delicto tort claim. In this claim, Rhonda alleged that AMCO had wrongfully neglected to perform its good faith duty to make a reasonable and timely adjustment settlement and payment to her. Rhonda contends that the summary judgment determination was error.
When a contract imposes a duty upon a person, the neglect of such a duty is a tort, and an action ex delicto will lie.
Porter v. Iowa Power and Light Co.,
C.
A similar analysis disposes of appellants’ claim that the district court erred in granting AMCO summary judgment on the abuse of process claim. Rhonda supports this claim with allegations that AMCO filed this declaratory judgment action
for the improper purposes of hoping that ... evidence [against Rhonda] would somehow develop during the pendency of this action, or that somehow it could im-put whatever evidence it had against Randy Stammer to Rhonda Stammer, or that it could make interest on the insurance not paid, or any combination of the foregoing purposes.
*714 The general principle underlying an abuse of process claim is noted in section 682 of the Restatement (Second) of Torts. It states:
One who uses a legal process, whether criminal or civil, against another primarily to accomplish a purpоse for which it is not designed, is subject to liability to the other for harm caused by the abuse of process.
In
Schmidt v. Wilkinson,
there is no action for abuse of process when the process is used for the purpose for which it is intended, but there is an incidental motive of spite or an ulterior purpose of benefit to the defendant.... For abuse of process to occur there must be use of the process for an immediate purpose other than that for which it was designed or intended. The usual case of abuse of process is one of some form of extortion, using the process to put pressure upon the other to compel him to pay a different debt or to take some other action or refrain from it.
In addition, Schmidt approved the following commentary from the Restatement (Second) of Torts section 682 appendix (1981), which attempts to crystallize the essence of abuse of process:
Some act or threat directed to an immediate objective not legitimate in the use of the process is required, and the defendаnt is not liable if he has done no more than carry the process to its authorized conclusion, even with bad intention.
Schmidt,
In the present case there is no question that AMCO was within its rights in bringing this action in order to have its duties under the policy determined. Iowa Rule of Civil Procedure 262 provides that “[a]ny person interested in a contract, oral or written, ... may have determined any question of the construction or validity thereof or arising thereunder, and obtain a declaration of rights, status or legal relations thereunder.” Insurers commonly employ declaratory judgment proceеdings in order to determine their rights and duties under the relevant policy.
See e.g., IMT Ins. Co. v. Roberts,
III.
The appellants contend that the district court erred in refusing to allow them to amend their answer to conform with the proof following trial. Such an amendment would have stated a first-pаrty bad faith tort claim on behalf of Randy and an ex delicto tort claim on behalf of both defendants.
The amendment of pleadings is provided for in Iowa Rule of Civil Procedure 88. The allowance or disallowance of amendments to the pleadings to conform to the proof at the close of all evidence is a matter for the exercise of the trial court's discretion.
W & W Livestock Enters., Inc. v. Dennler,
IV.
The appellants maintain the district court erred in instructing the jury. This error, they contend, resulted from the district court’s arbitrary failure to instruct on their theory that AMCO had breached its duty to settle or adjust. In addition, the appellants argue the instructions unjustifiably focused on AMCO’s theory of the case to the exclusion of their own.
The parties to a lawsuit have a right to have a legal theory submitted the jury so long as the theory is supported by both the pleadings and substantial evidence.
Hoekstra v. Farm Bureau Mut. Ins. Co.,
Our аpplication of these principles to this case persuades us that the appellants’ contention here is without merit. The statement of the case which was given with the instructions clearly presents the appellants’ theory “that the insurance company breached the terms of its policy, by failing to pay for the covered losses sustained by the Defendants,.... ” The remainder of the instructions was drafted appropriately. Neither do we think the instructions, when considered as a whole, unduly emphasize AMCO’s theory of the case. We reject the aрpellants’ suggestion to the contrary.
V.
The appellants contend the district court erred by permitting improper impeachment of Randy. During trial, the following colloquy transpired during AMCO’s direct examination of Randy:
Q. Do you agree that this house was burned intentionally? A. Was it an arson, you mean?
Q. Yes. A. Yeah.
Q. How do you suggest to this jury how the arsonist got in? A. I do not know.
Following appropriate objections, AMCO’s counsel was allowed to proceed with the following attempt at impeachment:
Q. I'd like to have you turn your attention to the statement under oath before you that was taken on August 25, 1983, and direct your attention specifically to line 25 at page 73. Do you find that sir? A. Yes, I do.
Q. Do you find this question appearing there: “Do you have any idea how they would have gotten in there if that would be the case?” And what was your answer at that time? * * * What was your answer? A. “Key would work pretty good.”
Q. The key? A. Yeah.
Q. And that was your answer at that time? A. ■ Yes, it was.
The appellants contend this impeachment was improper because no material inconsistency is present. In analyzing the appellants’ contention, we note initially that the foundation requirements generally applicable to prior inconsistent statemеnts do not apply to admissions of a party opponent.
State v. Gilmore,
As to appellants’ contention that the impeachment was improper because no inconsistency is present, we note that in
State v. Matheson,
*716 that if there is an inconsistency between the belief of the witness, as indicated by his previous declarations, and that which would naturally be indicated by his examination in chief, such previous declarations may be shown, although they are not directly contradictory of any specific statement made on his examination in chief.
Guided by this authority, we think the district court was сorrect in determining Randy’s statements to be inconsistent for purposes of impeachment. As to the contention that the inconsistency is not material, we repeat the test our state adopted in
Gilmore,
[C]ould the fact, as to which error is predicated, have been shown in evidence for any purpose independently of the contradiction.
Our courts have recognized two categories of evidence which fall within this rule: (1) facts relevant to some issue in the case; and (2) facts discrediting the witness in respect to bias, corruption, skill, knowledge, or motive to falsify.
State v. Blackford,
VI.
The appellants contend the district court erred by excluding a statement purportedly written by Terry Blumberg, who was suspected of actually sеtting fire to the Stammer home. The statement was a partial basis for the opinion of Michael Keefe that Blumberg had been procured by one or both of the Stammers to set the fire. Keefe, a special agent fire investigator with the State Fire Marshal’s Office, was treated as an expert witness by the district court.
Iowa Rule of Evidence 705 states that an expert witness
may testify in terms of opinion or inference and give his reasons therefor without prior disclosure of the underlying facts or data, unless the court requires otherwise. The expert may in any event be required to disclose the underlying facts or data on cross-examination.
This rule is identical to Federal Rule of Evidence 705.
See
Iowa Code Ann., Rules of Evidence, at p. 127 (West 1983). That rule has been interpreted as placing “the full burden of exploration of the facts and assumptions underlying the testimony of an expert witness squarely on the shoulders of opposing counsel’s cross-examination.”
Smith v. Ford Motor Co.,
A district court is given control over the mode and order of interrogating witnesses and presenting evidence with an eye toward the efficient ascertainment of truth. Iowa R.Evid. 611. In an analogous situation, our courts have said that whether a party shall be permitted to abandon the cross-examination of a witness for the opposing party and examine him or her as his or her own witness is a matter wholly committed to the discretion of the trial court.
Reeves & Co. v. Younglove,
VII.
Appellants maintain the district court erred in refusing to admit into evidence, for purposes of impeachment, a tape recording made by Rhonda, Randy, and Terry Blum-berg. Blumberg, on direct examination, testified that Randy Stammer had offered him money to burn the Stammer home. On cross-examination by Stammer’s counsel, Blumberg admitted that he had a tape-recorded discussion with Randy and Rhonda in which he, Blumberg, had said his statements to the authorities implicating Randy were false. Blumberg testified, while still on cross-examination, that he had made thеse tape-recorded statements in order to avoid responsibility for his part in the arson investigation: “to cover up for my own things and to make it seem like I was being pressured into” making the statements incriminating Randy. In addition, Blumberg stated that he had been drunk when he made the tape-recorded statements. During their case-in-chief, the Stammers attempted to introduce the tape recording into evidence, with Rhonda as the sponsoring witness, in order to impeach Blum-berg’s testimony that he had been intoxicated while making the statements. The district court, believing the evidence’s probative value was outweighed by the dangers of prejudice, confusion of the jury, and undue emphasis on collateral issues, sustained AMCO’s objection and excluded the evidence.
The district court is vested with discretion to exclude evidence under rule 403 when its probative value is substantially outweighed by the potential for undue prejudice, confusion of issues, or waste of time.
See Carter v. MacMillan Oil Co., Inc.,
VIII.
Finally, the appellants argue the district court erred in excluding one of the Stammers’ witnesses as a sanction for their noncompliance with discovery rules. Interrogatоries propounded by AMCO asked the Stammers whether they had consulted any expert witness with respect to this case. The Stammers’ response was as follows:
No unless you consider the retention of Goldburg Claim Service, Inc., for the sole purpose of preparing claim to be within the purview of this interrogatory. Such retention was not for the purpose of assisting in the preparation of this case.
When asked by interrogatory whether they expected to call any person as an expert witness at trial, the Stammers responded: “No, not at this time.” The day before trial began the Stammers filed the following supplementation of the interrogatories noted above:
Michael J. Pakkala, President, United Claims Service, Inc., 9031 Penn Avenue South, Bloomington, Minnesota 55431, will testify as a public adjustor as to how he computed the Defendants’ Claim Loss which he prepared and which has been submitted to Plaintiff. He will testify also as to subsequent deterioration to the insured premises.
Pakkala had been the representative of Goldburg Claim Service, Inc., who had been consulted by the Stammers in 1983. Prior to his testimony, AMCO moved under Iowa Rule of Civil Procеdure 125 and Local Rule *718 of Practice 2.4 to exclude Pakkala as a witness. Iowa Rule of Civil Procedure 125 provides in pertinent part that
[a] party who has responded to a request for discovery with a response that was complete when made is under no duty to supplement his response to include information thereafter acquired, except as follows:
(a) A party is under a duty seasonably to supplement his response with respect to any question directly addressed to (2) the identity of each person expected to be called аs an expert witness at trial, the subject matter on which he is expected to testify, and the substance of his testimony.
Local Rule of Practice 2.4 provides as follows:
Interrogatories. If Answers to Interrogatories are required to be supplemented, the supplemental answers shall be served no later than fourteen (14) days before the trial. Sanctions for failure to comply with this paragraph may include, but are not limited to, exclusion of evidence.
The principles which guide our review of the Stammers’ claim were clearly stated in
Hoekstra v. Farm Bureau Mut. Ins. Co.,
Of course, trial court has the inherent power to enforce our discоvery rules and may impose sanctions for a party’s failure to obey. Exclusion of expert testimony is within the realm of sanction alternatives. We will reverse the imposition of a sanction only when trial court abused its discretion. “We find an abuse of discretion when such discretion is exercised on grounds or for such reasons clearly untenable or to an extent clearly unreasonable.” Thus, an abuse of discretion is rarely found, (citations omitted)
In support of their contention of error, the Stammers first argue that they were not required to supplement the interrogatory because Pakkala was not an expert witness. Consequently, they contend, the supplementation was unnecessary and cannot serve as grounds for the sanction imposed by the district court. We think this contention belied by the fact that Stammers’ counsel stated in the district court that Pakkala’s testimony was going to explain the proof of loss which he had prepared as a public adjuster in 1983. We think this properly constitutes expert testimony. See Iowa R.Evid. 702. In addition, the answers expressly supplemented AMCO’s interrogatories inquiring as to expert witnesses. Moreover, wе think counsel’s contention that he supplemented the interrogatory as soon as possible is contradicted by the record which includes counsel’s statement that he contacted Pakkala “about a year ago ... to see if he might testify,” as well as the following rationale in support of the tardy supplementation:
Quite frankly, in all candor, Your Honor, I had almost not picked up this file until last weekend to prepare for this case for about a year and had really not thought about it. So I — I mean, I can’t — I can’t supplement the case. I can’t supрlement the Interrogatory before the Interrogatory’s wrong regardless of what the Local Rule says about fourteen (14) days before.
And I’ll tell you, quite frankly, I spent most of last week at a case for some people from Lakota before the Department of Public Instruction and did not turn my attention to this case until— Well, I’m sorry. Not the weekend. I did start working on it Thursday and a little bit Friday. Maybe that’s not an admission I should put on the record, but I think it certainly supports the Resistance I make to the Motion for Sanctions.
The district court did not abuse its discretion in excluding Pakkala’s testimony.
The district court is affirmed.
AFFIRMED.
