Connor and Jason are assigned to protect Feliks Malkov, son of a Russian politician who is try to take down the Russian Mafia. They plan to pose as cousins to Feliks in order to attend school with him and be close to him at home. Both Connor and Jason find it difficult to protect their principal due to his stubborn selfish nature, but soon find compassion when they see how much Feliks is bullied by others in his class. One student who takes a liking to Feliks is Anastasia who is a beautiful new student on a music scholarship at the school. Predictably, Connor and Jason butt heads, but it isn't long before they have to work together if they are going to survive, especially with the return of the mysterious Mr. Grey.

Assassin is the fifth book in the original Bodyguard series and continues the story of Connor who is following in his father's footsteps as a bodyguard in order to provide for his grandmother and ailing mother. The story is filled with action and adventure in a corrupt Russia. Since these characters were introduced in previous books, little character development is needed, but Connor and Jason do learn lessons about working together and relying on one another. The only drawback in this book is that the ending falls back on a cliche, but overall, Assassin successfully continues the dynamic Bodyguard series. ( )