Hack by E.M. Leya

For years, Carter has searched for the man who killed his daughter, unable to let go of the pain of her loss and the anger swirling inside him at the violent way she was taken. He’s dedicated his life to hunting down pedophiles, trying to save others from suffering the loss and pain he has suffered.
Archer has spent years tracking down a serial killer, unable to banish the memories of the graves from his mind, and always dreading there will be more. He left the FBI so that he could focus on a case he couldn’t forget, working now as a private detective.
With both men passionate about bringing the killer to justice, they work together, combining knowledge and evidence, leading them down a path of darkness as they move closer to finding the man responsible for so many deaths.
Seeking vengeance isn’t what he thought it would be, taking Carter to the breaking point, and worrying others that he might not return. With Archer by his side, he must face the past in order to move into the future, but sometimes letting go isn’t as easy as it seems.