Dr. Marja Pulaski knew she was inviting danger by treating the wounded stranger. The man called Kane wasn't what he pretended to be. But she couldn't begin to guess how much of a threat he really was--or the passion he'd awaken with his very first touch....A Special Forces agent who put his life on the line every day, Kane Donnelly knew better than to fall for a woman who could compromise his mission. Especially with her life and the lives of countless others at stake. He couldn't risk losing Marja. But he had to let her go before their growing love plunged them into the greatest peril of all.
Severity reflects intensity, not value — “central theme” means a warning is a core part of the book, not that the book is bad.