When Dianne Hart and Donnie Rudd begin an affair in a small Chicago suburb, Dianne's kids hope that their mum has found love. But instead it triggers a series of bizarre lies and deceptions that reveal a cold-hearted killer in their midst.

Diana Lovejoy and husband Greg Mulvihill live happily in southern California. But when accusations rock the marriage and a mysterious phone call ends with an attempted murder, police uncover the shocking truth behind this once dream couple.