Megan Boone) is forced to decide whether to go to the dark side one last time when Reddington «makes a disturbing request to Liz in exchange for the truth about his identity.»In ET's exclusive sneak peek from the season closer, Liz pays a visit to a recovering Agent Ressler (Diego Klattenhoff) and the two share a sweet moment of respite as she toils over what to do.«Got a decision to make,» Liz begins to say before Ressler jumps in, not allowing her to finish her thought. «Cooper's wrong,» he