Driving home from a party, Kate and Allan Royce stop to help a disheveled young woman. Claiming amnesia, the girl has nowhere to go, so they take her in and call her Elizabeth. She charms the Royce's friends and two potential suitors—but people keep showing up claiming to know her identity, from a couple missing their daughter to a psychiatrist searching for an escaped patient to a wealthy businessman on the hunt for his lost fiancée. Who is Elizabeth really? This 1979 mystery is still as page-turning as they come! (AG)