Kidnapped is the fourth book in the Blue Moon series by Sierra Daniels. It spins off of Avengers: Age of Ultron.

Thea is happy now, living in New York with Max and Kyle. She and Jack go to the same school, and they go to Panera Bread every afternoon to do homework. She goes to Stark Tower often, to train with Clint, and Natasha if she's there But Thea has a secret she is forced to keep. And when she breaks her vow, the consequences will be dire.

"How far that little candle throws its beams! To shines a good deal in a naughty world." ~Shakespeare, The Merchant of Venice