Ramal, Michael, Ja and Whip are able to escape just as Cross and his followers break into solitary.
Michael and Lincoln share an emotional reunion as a news report on Ramal's death plays.
Meanwhile, T-Bag confronts Kellerman, who denies being Poseidon, an unknown rogue CIA agent criticizing the U.S. foreign policy.
T-Bag manages to escape; but Kellerman is killed by Van Gogh, who starts doubting Poseidon's cause.
The definition of the episodes title: "The Prisoner's Dilemma", is a paradox in decision analysis in which two individuals acting in their own self-interests do not produce the optimal outcome.