and nothing bad ever happened. so, really why should they worry, as they dreamt up their costumes. their clever impersonations of evil. >> we were both gonna be batman villains. >> chelsea would be the essence of evil, batman's nemesis poison ivy. >> she looked beautiful in her costume. >> yeah, i'll bet -- >> i'll never forget. >> chelsea made it herself, spent weeks bent over a needle and thread. by hand, she sewed on each leaf of artificial ivy -- >> i didn't even know -- she could do that. >> and she found a wig, just the right thing. maroon with tips, red like blood, like the wine jug she carried. like the bright red of her poison lips. >> and she must have been very proud of it? >> she was. >> did they imagine even for a moment as they prepared. that true evil would find them here on this sleepy country road, not just the pretend kind. no, not as they tingled with excitement that saturday