Deceiver of Minds by Jordan L. Hawk

John Starkweather is reeling from the discovery that SPECTR, the agency to which he’s dedicated his life, experimented on him as a child. As his true memories continue to return, he has but one purpose: to find the other victims.
When John, Caleb, and Gray discover SPECTR has been tracking their every move, they’re left with only one choice: to go on the run and find the other victims before the agency catches up with them.
But the past isn’t done with John yet, and the truth about one of his fellow victims may hold devastating consequences for the future.