When casting calls plans are released. It'll be unknown for a while. As Michael Buckley, the author of the series said on July 27, 2009: 'The movie rights were optioned, but the producers got into a big fight with the studio and it all fell apart. So they are available, but finding the right people to make a Grimm movie is like trying to find a magic genie lamp. There is lots of interest all the time, so who knows?'