State of Maine v. Kyle J. Dube, 136 A.3d 93

Defendant Kyle Dube was convicted by a jury of kidnapping and murdering a 15‑year‑old after using a fake Facebook account to lure her; conviction affirmed.
While jailed on an unrelated traffic sentence, Dube allegedly passed a 16‑page handwritten statement (State’s Exhibit 75) describing the crime to another inmate via "fishing."
The inmate initially refused to identify the document at a pretrial hearing but later testified at trial; the document contained portions the inmate said were in his handwriting.
The State sought to authenticate Exhibit 75 by calling four nonexpert witnesses (two former co‑workers, Dube’s father, and Dube’s former girlfriend) who testified they recognized Dube’s handwriting from earlier, unrelated occasions.
Dube objected, arguing the witnesses lacked sufficient familiarity, were tainted by being asked by police to identify the writing, and that their testimony added no value; the trial court admitted the testimony after voir dire.
In closing, the prosecutor repeatedly urged jurors to use their “common sense”; Dube claimed that argument prejudiced his right to a fair trial. The court affirmed the conviction.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Admissibility of nonexpert handwriting ID	State: nonexpert witnesses may authenticate writing if familiar with handwriting and testimony is helpful under M.R. Evid. 701 and 901(b)(2)	Dube: witnesses lacked sufficient, non‑litigation‑acquired familiarity; police contact was suggestive; testimony added no benefit	Court: admission proper; familiarity and circumstances met low Rule 901 standard; any weight/credibility for jury to decide; harmless even if error due to other corroboration
Prosecutor’s appeals to jurors’ “common sense” in closing	State: may appeal to jurors’ common sense/experience in argument	Dube: repeatedly invoking “common sense” risked diluting burden of proof and prejudiced trial	Court: not obvious error; such appeals permitted if they do not equate to or dilute reasonable‑doubt standard; jury instruction preserved burden of proof

State v. Weaver, 130 A.3d 972 (Me. 2016) (standard for viewing evidence in light most favorable to jury verdict)
State v. Robinson, 118 A.3d 242 (Me. 2015) (abuse‑of‑discretion review of nonexpert testimony)
State v. Ilsley, 595 A.2d 421 (Me. 1991) (nonexpert may authenticate writing if sufficient familiarity not acquired for litigation)
State v. Berke, 992 A.2d 1290 (Me. 2010) (Rule 901’s flexible, low burden for authentication)
State v. Ashley, 666 A.2d 103 (Me. 1995) (prosecutor may appeal to jury’s common sense without impermissible argument)
State v. Estes, 418 A.2d 1108 (Me. 1980) (reasonable doubt may be explained as a doubt based on reason and common sense)
State v. Uffelman, 626 A.2d 340 (Me. 1993) (dangers of analogizing jury duty to private life decisions)