Hartmann is a Writer/Producer and partner at White Horse Pictures. Prior to joining White Horse, Cassidy was Director of Documentary Features at Exclusive Media. Cassidy began her career as a journalist for the Philadelphia Weekly, and her reporting was a part of MTV network’s Emmy-winning “Think” campaign. A Colorado native, she graduated from the University of Pennsylvania and holds an M.F.A. from the Peter Stark Producing Program at the University of Southern California.