Eventually Karas tracks down Muller. He explains that he took Ilona because through her research she has discovered the secret to eternal life (as he himself did 40 years ago); but knowing what the consequences would be if Avalon acquired such knowledge, he kidnapped her. Karas tries to encourage the old scientist to hand himself in but Muller is mistakenly shot by a police marksman. Karas then deduces that the mysterious old man is Muller's younger brother: now immortal but trapped in an elderly body.