Beverley, Elsie and Margot are wives of convicted killers. During the sun-drenched summer of 1966, they form an unlikely friendship after the discoveries of their husbands’ brutal crimes. With their exes --- some of California’s most infamous murderers --- dead or behind bars, they are attempting to forge a new future for themselves. They know people look at them and think only one thing: How could they not have known what their husbands were doing? How much are they to blame? And yet, when a string of local killings hits the news, the three women --- underestimated, overlooked, shrewd --- decide to get to work. After all, who better to catch a killer than those who have shared their lives and homes with one?