"The adventures of vibrant, young American widow Jane Wunderly send her to Istanbul, Turkey, where the search for her archeologist father unravels secrets tied to a mysterious relic from the Ottoman Empire"-- Publisher description.

Istanbul, 1926. After her historian father makes a clandestine journey abroad, Jane and Mr. Revers trace his footsteps. They learn that Professer Wunderley was on a mission to locate the lost heart of Sultan Suleiman the Magnificent-- an Ottoman Empire relic said to posses mystical powers-- before he vanished. Jane realizes she has been stalked with every move she's made. With few clues to rely on-- and even helpful friends can't be trusted-- Jane's search appears rather desperate. -- adapted from jacket