Hugh Denby; Claire Denby; Janice Blake; Dean Ritchie
While trying to sleep, Hugh wanders into a strange dimension where people lie asleep in rooms. Hugh's friend Dean appears and explains while people sleep their dreams create reality and Hugh understands his own life is a dream. Hugh goes to find his other self as it sleeps to prevent it from waking up, but suddenly Hugh himself awakens. He decides it was all a dream and writes a story about it.
Clark investigates a strange advertisement posted in the newspaper asking someone to return a lost raygun. When the raygun turns up in the mail Clark tests it and disappears, reappearing on Mars. An ad appears in the paper announcing they found the missing Clark.
Nora shuts down an atomic pile and suffers a terrible dose of radiation. As she struggles in the hospital, Mark appears to her and tells her to share what she knows with his colleagues. Mark was lost at sea, it was his spirit who visited Nora.