In a snowbound village in the German mountains, a young woman discovers an extraordinary secret. Before she can reveal it, she disappears. All that survives is a picture of a mysterious medieval playing card that has perplexed scholar...

Sam Grant, a disgraced ex–Special Operations Executive soldier and an adventurer by trade, is lured back to the Mediterranean by a secret from his past: six years ago, a dying archaeologist entrusted him with his life's work—a lea...