sentences:  The project was renamed "Moonlight" when picked up by CBS on May 14, 2007, prior the upfronts.David Greenwalt, creator of "Miracles" and co-creator of "Angel", joined the staff in May 2007 as showrunner and executive producer alongside Silver.CBS hired Greenwalt during the pilot process to restructure the original concept by Koslow and Munson, however health reasons forced him to leave the series, and Chip Johannessen took over showrunner duties in August 2007.