The trial concerning a Door County cold case close to 50 years old will hit its second week of proceedings on Tuesday.

Richard Pierce is charged with First-Degree Murder and Disinterment of Dead for the death of his wife, Carol Jean. The first week of the trial consisted of hours of testimony from over 20 different sworn witnesses, including former and current members of law enforcement, acquaintances from his time serving in the U.S. Coast Guard, family, and friends. Eighty-eight exhibits of evidence have also been offered according to court records. The criminal complaint says Pierce had plenty to gain from Carol Jean’s disappearance, while the defense questions if there is enough to convict him since her remains have never been found. Carol Jean went missing in September 1975.

The trial will begin each week on Tuesdays through its scheduled end on May 13th.