Sam and Molly are a very happy couple and deeply in love. Walking back to their new apartment after a night out at the theatre, they encounter a thief in a dark alley, and Sam is murdered. He finds himself trapped as a ghost and realises that his death was no accident. He must warn Molly about the danger that she is in. But as a ghost he can not be seen or heard by the living, and so he tries to communicate with Molly through Oda Mae Brown, a psychic who didn't even realise that her powers were...

Brilliant researchers Lillian Reynolds and Michael Brace have developed a system of recording and playing back actual experiences of people. Once the capability of tapping into "higher brain functions" is added in, and you can literally jump into someone else's head and play back recordings of what he or she was thinking, feeling, seeing, etc., at the time of the recording, the applications for the project quickly spiral out of control. While Michael Brace uses the system to become close again...