Reveal Your Secrets

When Sirius drags Peter under the Whomping Willow in third year, it reveals that Crookshanks is actually an Animagus. Regulus Black survived the inferi in 1979 and transformed into his Animagus, with no intent to return to the human world. Now, with his secret revealed, what will he do? Will Sirius trust the brother he had come to accept was a Death Eater, and then dead? AU