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, Capt. Wagner assigns Elsbeth and Kaya to investigate.
While investigating a case where bodies are found in the middle of the woods, the team discover that the suspects have created a new sport.
Danny contemplates retirement, but Erin steps in and requests his help for a case involving her ex-husband. Frank clashes with the new mayor, while Eddie and Jamie pose as a couple.
When an officer is outed and his partner refuses to ride with him, Danny and Baez are asked to work with new partners temporarily; Eddie and James try to steal a collar from a pompous detective; Frank speaks out about equality on the force.
Teresa Colvin, the city's first female superintendent, petitions for a corruption task force to investigate an entrepreneur-turned-politician; Colvin's ex-partner, Jarek, investigates a suspicious murder with his new partner, Caleb.