Inside the Sundance Labs: Kieran & Michelle Mulroney's Path From Sundance to Superheroes

Kieran and Michelle Mulroney are no stranger to massive blockbusters -- they contributed production rewrites to Mr. and Mrs. Smith and wrote the draft that rocketed George Miller's DC superheroes collection Justice League to just short of a shooting date -- so it may come as some surprise to find that the key to their big-studio success was their Sundance Labs background. Five years ago, their script Paper Man won them entree into both the Labs and Hollywood's top rewrite lists, and this past month, the Mulroneys finally saw the finished Paper Man premiere at the Los Angeles Film Festival. We talked to them about how exactly the Park City experience can lead to putting words in Superman's mouth.