A Florida mother's disappearance on Mother's Day 2018 revealed a murderer hiding in plain sight and the killer's decades-long trail of lies and false identities.

Concern grew when Joleen Cummings, 34, failed to pick up her children after work at the Tangles hair salon in Fernandina Beach that May 13.

A new "20/20" episode, "The Final Cut," airing Friday, Nov. 21, at 9 p.m. ET on ABC and streaming the next day on Disney+ and Hulu, examines the case.

You can also get more behind-the-scenes of each week's episode by listening to "20/20: The After Show" weekly series right on your 20/20 podcast feed on Mondays, hosted by "20/20" co-anchor Deborah Roberts.

Investigators found her car abandoned days later in a nearby Home Depot parking lot, where camera footage revealed an unknown person

See Full Page