To Serve and Protect Books in Order

Secret Service agent Nick guards the president's widowed sister Isabelle after anonymous threats target her. Her twin sons draw him into family life, while his attraction to her complicates the dangerous work of finding whoever is behind the threats.

Doctor Connor falls for fellow humanitarian physician Calla, unaware at first that she is a princess. Their relationship faces the demands of her royal family and country, leaving her torn between love and responsibilities she cannot easily abandon.

Secret Service agents Whitney and Max struggle with the collapse of their casual relationship just as they investigate a federal-building bombing. Her unresolved childhood trauma and his uncertain choices complicate their attempt to work together and recover their bond.

Agent Gabe finally has a chance to restore his career by joining the presidential protection detail. His growing love for widowed Macy clashes with her refusal to risk losing another partner to the dangers of Secret Service work.

Maggie joins a special needs school with her support dog Rosie and grows close to teacher Noah. Her difficult past revives his unresolved trauma, jeopardizing their relationship while their students depend on both educators and the dog’s calming presence.