Matlock and Leanne head to the beach where Leanne reunites with three good friends from college, while Matlock meets someone from his past.

Leanne's reunion with her old friends turns problematic when she starts suspecting one of them of murder. Meanwhile, Billy Lewis is determined to get back at Matlock for breaking his sister's heart years earlier.

Brian Martell is accused of murdering a playwright 40 years after Brian's father was charged with murdering the playwright's father.

Matlock and his father investigate a 40-year-old murder, apparently duplicated by the accused murderer's son.