A complete first draft of the pilot script was delivered on February 24, and the teleplay kept on being revised, with the final script arriving on April 19.[5] The development of the show was constrained by tight deadlines, as it had been commissioned late in the 2004 season's development cycle and Braun estimated that the whole process from writing to post-production took 6 to 8 weeks.[7] Despite the short schedule, the creative team remained flexible enough to modify or create characters to fit actors they wished to cast.[13]