Jay Lee (Chris Park) was promoted to a series regular for this season. Core Storylines and Arcs
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. CSI: Vegas - Season 2
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. Jay Lee (Chris Park) was promoted to a