Jason Kemp, a successful architect (Christopher Reeve) is left quadriplegic after a car accident and to pass the time begins to 'spy' on his neighbours in the apartment block opposite. One day he believes he has evidence that a murder has taken place: that sculptor Julian Thorpe, a violent philanderer, has killed his wife Ilene. Kemp confides in his co-worker Claudia (Daryl Hannah) and then Detective Moore (Robert Forster) who is sceptical about his theory, especially after Ilene reappears in the apartment!Kemp knows she is not the same woman butcannot prove it. Who is she and why is she pretending to be Ilene? More importantly what's happened to Ilene? A psychological thriller packed with suspense that'll keep you guessing to the very end.