Things turn deadly when elite matchmaker Margo Clarke goes to extreme lengths to keep her socialite client from finding out the truth about her perfect new husband. When the husband goes missing, Captain Wagner assigns Elsbeth and Kaya to investigate.

After hearing his favorite patron talk about being bullied mercilessly in college, the charismatic owner of an exclusive cocktail bar decides to seek revenge on her behalf, but his desire for justice leads to a deadly mistake, leaving Elsbeth and Kaya to connect the dots. Meanwhile, after learning that the DOJ investigation is close to an indictment, Elsbeth and Captain Wagner join forces to expose the real criminal.

When a former child star turned party girl Mac wakes up on Halloween after a wild night on the town with no recollection of her whereabouts and afraid she may have committed murder, Elsbeth and the team retrace her steps to find the truth. Meanwhile, Captain Wagner must address low morale at the precinct.

Sparks fly between Elsbeth and a handsome Scottish musician named Angus after he witnesses a murder through a video art installation linking Manhattan with his tiny seaside town. The two join forces to solve the case together from across the pond.

As Judge Milton Crawford inches closer to becoming a federal judge, Elsbeth scours his past to prove he's a murderer before it's too late, but her attempts to take him down put everyone around her in jeopardy. Meanwhile, Teddy considers following in his mother's professional footsteps.