Crosshairs - The Silencer Series, #22

One of Vincent's men is found with the names of Recker and Haley in his pocket. After a brief investigation, it's discovered that the man has taken dozens of pictures of them, along with Vincent, Malloy, Mia, and Cheryl. Before they even realize what's going on, several dead bodies connected to the man appear. As they investigate, they learn of a group of rogue police officers who appear to be involved somehow.
But who are they after? Recker? Or Vincent? Someone from the past is going to use these pictures to get one to turn on the other. And it's a race against time to figure it out, before the pictures get released, effectively destroying the lives and careers of Mia and Cheryl, and before one of Recker or Vincent has to kill the other.