Book 2 of The Nowhere Man
 
A former government military asset code-named Orphan-X, Evan Smoak works as the Nowhere Man out to protect the helpless.Until the night it all goes wrong. Ambushed, drugged and kidnapped, Evan wakes in a locked room. He's outnumbered and outgunned.His captors are sure they've outsmarted him. But they've got it all wrong. He's not locked up with them.They're locked up with him .
 
Gregg Hurwitz