The Secret of Hidden Oaks: While working on his Master's degree in psychology, Carson is offered an internship at a private research hospital. But Harbor Oaks hides a dark secret. His patients are Changelings, shape shifters, being held against their will, and Carson soon discovers he's really the subject of the scientist's experiments. His only hope of escape is Tate, a shy, quiet doctor with an agenda all his own.

The Secret of Harbor Springs: Carson and his mate Tate team up with Gaven and Lily to escape Federal agents who are trying to bring them back to Hidden Oaks. Carson holds an unusual power over other Changelings — a power the Federal task force charged with rounding up Changelings will go to any ends to make their own.

Liberate: Carson and Tate have been running for months, trying to evade the JIA so they don't end up lab specimens for the ruthless organization. With their future on the line, Carson realizes the most important part of his life will forever be his mate, Tate, but how can he trust a man who never tells him the whole truth?