Lenora Worth 
Deep Undercover [EPUB ebook] 

A dangerous undercover assignment…Another exciting True Blue K-9 Unit thriller In order to take down a serial bomber, NYPD K-9 officers Brianne Hayes and Gavin Sutherland must go undercover-as a married couple. But now the bomber’s targeting them to halt the investigation. As the clock ticks down, can Brianne, Gavin and their K-9 partners find the culprit in time to save the city-and save their own lives?