Sigma International Security Books in Order

Event planner Holly faces a stalker while organizing an ambitious holiday gala. Former special operations soldier Noel is assigned to guard her, but their growing attraction challenges his rule against becoming personally involved with the people he protects.

Kindergarten teacher Sabrina needs protection after a frightening school incident. Sigma operative Theodore, known as Ego, questions his assignment at first, but guarding her through a New York winter draws him into danger and unexpected feelings.

Bodyguard Kai Montego steps in when schoolteacher Mary Donahue faces harassment from a donor. Pretending to date at a fundraiser seems manageable, until lingering threats and unexpected feelings turn his protective assignment into something far more personal.

Broadway performer Amanda Perkins arrives at a billionaire estate for an exclusive engagement and encounters Alessio Figueroa, the lover she left behind. As danger shadows the production, her former mercenary must protect a woman who wants distance from their past.