Topaz and Treachery — Lynn Gardner

Bart and Allison Allan are on their way to Italy and the Greek Isles for a two-week visit. However what could be a relaxing second honeymoon quickly becomes a dangerous work assignment. The very pregnant Allison realizes that this will likely be her last mission as an agent with Anastasia, Interpol's elite anti-terrorism organization, before she has her baby so she wants to participate fully. Bart, however, is resolute that Allison stay completely out of harm's way. Clash is inevitable. Their assignment is to retrieve several valuable topaz stones taken from a necklace owned by Empress Elizabeth of Austria, which, when assembled, could reveal the location of a forgotten treasure plundered by the Nazis - treasure that holds the secret to unimaginable power and wealth. On their heels is a violent terrorist organization determined to get to the treasure first to finance their malevolent plans.