Superman's cousin, Supergirl (aka Kara), has been having weird nightmares in which she appears to be cast in the role of an assassin. When J'onn J'onnz is unable to telepathically decipher these dreams, Green Arrow and The Question try to help Supergirl -- who soon tumbles to the possibility that she might not be dreaming at all. Fans of The Manchurian Candidate will enjoy the plot twists in this episode, which establishes a plot strand that will be explored in further chilling detail in the later episode "Ultimatum." ~ Rovi