sentences:  However, the show underwent significant changes with all the aforementioned cast being replaced and with executive producers DeAnn Heline and Eileen Heisler, writers Rand Ravich and Jill Gordon and director Nigel Cole all fired.George had been personally cast by Bushnell, but left in early 2007 when she was offered the HBO series "In Treatment".The show premiered on February 7, 2008 as a mid-season replacement taking over "ER" spot at 10