Treason

TRHP. Harry has always been able to compartmentalise; to shut off the bleeding parts of himself in order to act quickly, in order to survive. It's something he had learned young. Something — yet another thing — he had in common with Tom. He'd never expected to have to use it against him. In which a battle rages, and Harry suffers a betrayal. Inspired by wynnebat's Undoing.