Will Graham and the BAU team track a serial killer whose bloody ritual includes cutting the victims' back flesh and stretching it to look like angel wings. Returning to the field weighs heavily on Will's psyche and Hannibal tries to drive a wedge between Will and Jack. Meanwhile, Jack Crawford's wife Bella pulls away from him and begins seeing Hannibal as her therapist, in an effort to come to terms with the fact she is dying. Beverly tries to connect with Will on a more personal level.