What It Takes To Not Be Broken (слэш)

He's pretty sure Death is nipping at his heels at this point.
But he has to stay awake, has to keep Gerard away from Erica and Boyd, the two Betas still tied up with mountain ash and electricity on the other side of the room, and it looks like they're trying to scream through their duct-tape, still, but he can't hear it, not anymore.
The terrible, all-consuming, staticky silence had over taken him after about the third time Gerard's lackey- Ben, he thinks his name was- had stuck a military grade taser to his ear, a low enough voltage not to cause brain damage, he'd said, because the point of this was for him to talk.
[Or: The one where Stiles is kidnapped and tortured by Gerard, and his injuries lead to a complete loss of hearing, among other things.]