A former doctor found liable in a 2009 murder-suicide is asking a state judge to set aside the verdict and order a new trial, alleging the judge improperly allowed testimony that harmed the defense.

A Waterbury Superior Court jury found former Tolland doctor Carl Koplin liable on Dec. 19 during a civil trial for the deaths of James Morrin and his wife, Alice Morrin. James Morrin fatally shot his wife in their Vernon home on June 29, 2009, after learning she was having an affair and more than two months after she filed for divorce, and then he killed himself, according to police and court documents.