Mary Kills People

Des and Mary team up, but a routine case causes Mary to question her choice to reconnect with him.

When Olivia attempts to blackmail Mary, she is drawn deeper into a deadly game of cat and mouse.

Mary and Ben join forces; Travis reveals a crucial detail about Ben's investigation.

Des worries that he and Mary may have crossed a moral line; Ben's investigation is jeopardized.

Ben forgives Mary; Mary and Des move forward with the death retreat.

Mary decides to wear a wire; Des and Nicole prepare for Brendan's death.