Jay Lee (Chris Park) was promoted to a series regular for this season. Core Storylines and Arcs
Season 2 Report: CSI: Vegas CSI: Vegas Season 2 premiered on , and concluded on May 18, 2023 , with a total of 21 episodes . This season marked a significant transition for the series, shifting focus from original stars Gil Grissom and Sara Sidle to a blend of new leads and returning legacy characters. Key Cast Changes and Returning Characters CSI: Vegas - Season 2
William Petersen (Gil Grissom) and Jorja Fox (Sara Sidle) did not return as series regulars. Mel Rodriguez (Hugo Ramirez) also departed before the season began. Jay Lee (Chris Park) was promoted to a
Marg Helgenberger reprised her iconic role as Catherine Willows , joining the main cast. Eric Szmanda (Greg Sanders) also returned in a guest capacity during the latter half of the season. Key Cast Changes and Returning Characters William Petersen