"I promised to keep you safe, and that's exactly what I'm going to do." Kelly Tomlinson followed in her father's footsteps at just 13 years old to become an undercover secret agent. She hasn't spoken to her family in years and she's seen and experienced horrific events that no teenager should have to face. Now at only 18 years old, Kelly is considered one of the best agents in the business. But that title comes with a price. Kelly is specifically requested to investigate a case after a small explosive device is found at a One Direction interview. Her job is to find the perpetrator and protect One Direction at all cost. However, there is one big problem. Her older brother, Louis, is in the singing boy band and she hasn't spoken to him in years. Will Kelly be able to separate her personal life from her profession life? What happens when Kelly's past catches up to her and threatens the people around here? And what will Kelly do when finds herself falling in love with her brother's curly haired mate? You'll have to read to find out!