Co-executive produced by none other than Khloé Kardashian, who knows a thing or two about sisterly bonds and how they can go awry, this series details shocking crimes committed by pairs of sisters. Sometimes the siblings work in concert, but often the duo turn against each other with the deadliest of outcomes. Hourlong episodes recount actual crimes via stylized re-enactments and interviews with immediate family members and close friends, painting pictures of how and why the sisters' lives went wrong. As well, investigators and law enforcement anchor each story as they describe their unraveling of the case and try to make sense of the crime committed.