Assignment: Single Mom Surveillance The Military K-9 Unit series continues Her serial killer brother's escaped--and it's single mom Zoe Sullivan who's under suspicion Sgt. Linc Colson trusts two things: his instincts and his Rottweiler K-9 partner, Star--and certainly not the pretty face he's assigned to monitor. He's done everything to keep her from getting under his skin--now he must stop those who want to put her six feet under.