The Limbo Connection — Derry Quinn

After Claire Omney accidentally drives her car into a ditch, a passing motorist drops her off for emergency treatment at nearby Meadowbrook Clinic, a fashionable establishment specializing in rejuvenation. When her husband, Mark, arrive the next morning to collect her, however, she had disappeared...The police suspect murder, and Mark becomes their favorite suspect. After all, he and Claire have been fighting, and he has been drinking a lot and is badly in debt. But more than murder is involved here-even what seems to be a message from the dead....