Olivia Vinall, Julie Graham, Sarah Woodward, Siobhan Redmond. Recently promoted to Detective Sergeant, 28-year-old Mattie Stone can’t keep her crime novel-writing aunts out of her investigations or her love life. They are always stepping in on both. But the one case that never gets solved is the disappearance of Mattie’s mother from 20 years ago. Includes "Murder in the Dark," "Death by Vinyl" and "Smoke and Mirrors." 3 episodes. 2019/color/4 hrs, 35 min/NR/widescreen.