"The Killer Down the Hall," a new "20/20" airing Friday, Oct. 4, on ABC at 9 p.m. E.T. and streaming the next day on Hulu, features the story of Stephanie Lazarus, including interviews with the ...

Stephanie Lazarus from prison after hearing emotional testimony from family and friends who said she "lied for decades" and used her police training to cover up the 1986 murder of her ex-boyfriend ...