Wolf Films and Open 4 Business Productions are now in pre-production on the new NBC Universal Television one-hour police drama series “Chicago PD”. Casting directors in New York and Chicago are holding auditions for new series regulars, recurring roles, guest stars, and day players. The series extras are being cast on an ongoing basis throughout production on season one. The show centers on the Windy Cities Police Department in Chicago, and is a spin-off from the hit NBC series “Chicago Fire”. Shooting on the first episode of “Chicago PD” gets underway in September, 2013.