When website columnist Robin Diamond is contacted by true crime podcast producer Quentin Garrison, she assumes it's a business matter. It's not. Quentin's podcast, Closure, focuses on a series of murders in the 1970s, committed by teen couple April Cooper and Gabriel LeRoy. It seems that Quentin has reason to believe Robin's own mother may be intimately connected with the killings. Robin thinks Quentin's claim is absolutely absurd. But is it? The more she researches the Cooper/LeRoy murders herself, the more disturbed she becomes by what she finds. Living just a few blocks from her, Robin's beloved parents are the one absolute she's always been able to rely upon, especially now amid rising doubts about her husband and frequent threats from internet trolls. She knows her mother better than anyone--or so she believes. But all that changes when, in an apparent home invasion, Robin's father is killed and her mother's life hangs in the balance.