One fine afternoon, Inspector Cole Dunavan finds he has been murdered and has become a ghost - with no idea how to be a ghost. No one sees or hears him; he can't move objects; and initially, he can't even walk through doors or walls. He learns, to his horror, that his body has not been found and the circumstances of his disappearance make it appear he betrayed his marriage and was killed by his mistress...who has also disappeared. But the truth is that the woman was an informant and he is still on earth because his obsession with finding evidence against her boss put her in mortal danger. While he works at saving her, he struggles to communicate with his old partner and to get straight with his wife. All while trying to learn the identity of his killer.