This episode recounts the disturbing 2011 murder of Greta Hansen, a 19-year-old Swedish housekeeper in Santa Clarita, California. The narrative details the discovery of her body in the Pratt family's attic and the subsequent investigation led by Detective Tina Borst. Initial suspicions of suicide were quickly dismissed, revealing a brutal homicide and a complex web of secret relationships involving Greta and all three members of the affluent Pratt family: Wendell, Jackie, and Brady. Evidence, including Greta's diary and a disturbing "scorecard," exposed their perverse and competitive sexual entanglements with her, ultimately revealing a motive for murder rooted in their desperate need to conceal these secrets.