From One Black To Another

Regulus was dead, has been for sixteen years...but what if he wasn't? What if instead of being drowned by an army of inferi he was dragged into the lake and put in a stasis? Sirius is ecstatic, Regulus not so much. "What do you mean fugitive? And Voldemort's still alive? Can you do anything without me?" "If I say no will you promise not to disappear like that ever again?" AU