CSI: Crime Scene Investigation (season 7) CSI: Crime Scene Investigation (season 7) The seventh season of "" premiered on CBS on September 21, 2006 and ended May 17, 2007. The series stars William Petersen and Marg Helgenberger. Catherine heads to a small town in Nevada ("Leaving Las Vegas") as Grissom and Sara continue their affair ("Living Doll"), in the seventh season of "CSI". Supervised by Grissom and Willows, the Las Vegas Crime Scene Investigators face both personal and professional challenges as Grissom says goodbye, and new CSI Michael Keppler joins the team ("Sweet Jane"), as they investigate the bizarre, the brutal, and the unprecedented, including a
Law of Gravity (CSI: Crime Scene Investigation) Law of Gravity (CSI: Crime Scene Investigation) "Law of Gravity" is the fifteenth episode of the of the television series "". Before the start of his shift, Keppler eats dinner at a diner where he runs into an older man named Frank McCarty. Frank, who appears to know Keppler from New Jersey, asks Keppler for a favor, but Keppler quickly says no before Frank can explain. The CSIs are called to a hotel room where a man and a woman have been shot and killed; the woman's left hand has been cut off. Brass informs them the man is Dennis