Donald attempts to protect Red from a possible assassination attempt but is misled. The newest member on the blacklist, Anslo Garrick, infiltrates the FBI black site and tries to capture Red. Meanwhile Liz gets caught in an elevator and tries to figure out what is going on.

The entire FBI team is under investigation as internal affairs tries to find the mole. Elsewhere, Red is missing and conducts his own investigation into who betrayed him. Meanwhile, a serial killer from Liz's past, "The Good Samaritan" strikes again. Liz is allowed to join the hunt for the killer as Cooper knows Red will likely reach out to help knowing how much this unsolved case means to Liz.