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CSI Exclusive: Grant Show Set for 'Steamy Fling' With Marg Helgenberger's Catherine

Things are about to get hotter than the Nevada desert at high noon for CSI‘s Catherine Willows. The Vegas crime-lab veteran will soon find herself embroiled in a “steamy affair” with an FBI agent played by Grant Show (Big Love, Melrose Place) — and it could turn out to be more than just a workplace fling.

Sources tell TVLine exclusively that Show has signed on for a multi-episode arc as Agent McQuaid, the “sexy and confident” partner of recently cast Matt Lauria (The Chicago Code), who “initially rattles Catherine when he and his colleagues swoop in to ‘help’ on the CSI team’s latest case.” Soon, though, McQuaid finds himself taken with Catherine’s amazing field work, Catherine finds herself taken with McQuaid’s intelligence and bravery, and the duo take their mutual appreciation directly to the bedroom.

With Helgenberger set to exit the long-running procedural at midseason, is it possible that Catherine has found a partner with whom she’ll ride off into the sunset? Stay tuned.

Excited about Show entering the CSI fray? Happy to see Catherine on a possible path to romantic fulfillment? Sound off in the comments!