Christian Reginald Shane, a former military operative with a dark past, has reinvented himself as a hired assassin in the bustling city of Los Angeles. His unique approach to assassination sets him apart: before executing a cheating spouse, he listens to their side of the story. If they can convince him their infidelity is justified, he spares their life on the condition they attend counseling with their spouse. Should they fail to mend their marriage, Christian promises severe repercussions. Christian believes his actions serve a greater good, helping couples confront their issues or providing justice for the betrayed. His intelligence and meticulous planning have kept him off the radar of law enforcement, leaving no evidence behind and crafting unbreakable alibis. However, his careful methods come under scrutiny when a 7th cheating spouse and their lover are found dead, and again this case seems unconnected to the others and devoid of clues. Enter Detective Joslyn Simms, one of the y