The actor Jason Isaacs has featured in some of the Harry Potter films. Since his character was imprisoned in an earlier film and given that the last book had not been released by then, he considered not returning for "Harry Potter and the Deathly Hallows - 1", assuming the character would have limited screen time only. He happened to run into J. K. Rowling at a dinner, where he fell to his knees and said "Get me out of prison, I beg you." Rowling told Isaacs he'd be out in the first chapter. Isaacs signed the film immediately.
What character does he play in the series?
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