Growing up on Cape Cod in the 1960s, Liza Rodman was a lonely little girl. During the summers, while her mother worked days in a local motel and danced most nights in the Provincetown bars, her babysitter --- the kind, handsome handyman at the motel where her mother worked --- took her and her sister on adventures in his truck. To Liza, he was one of the few kind and understanding adults in her life. But there was one thing she didn’t know: their babysitter was a serial killer. Though Tony Costa’s gruesome case made screaming headlines in 1969 and beyond, Liza never made the connection between her friendly babysitter and the infamous killer of numerous women until decades later.