 A group of teenagers gather at a golf course at a specified time. After the flash mob disperses, a body is found near the site. The CSIs follow the mob to a very prestigious prep school. They manage to trace the origin of the text messages telling the receivers to meet at the golf course to the son of one of Florida s most famous defense attorneys. At the same time, Horatio and Yelina are working to find the killer of a woman found in a dumpster.