As with the entire Blue Justice series, Vow of Justice, brings the action, drama and romance. The St. John family is one of my favorite aspects of the series. It brings about the devotion of family and importance of family ties. In this book, Lincoln is an FBI Special Agent who is left without a partner after an explosion occurs on a houseboat. Allison, his partner, supposedly dies in the explosion. Lincoln sets out to find her killer. Meanwhile, Alli puts her trust in those around her and realizes that this may be a mistake. The storyline is fast paced and intriguing, but the villain is easy to figure out. Even with that being said, I would recommend this suspenseful read!