Ron Glass

An upcoming episode of CBS's CSI will delve into the past of Greg Sanders (Eric Szmanda) and introduce an influential man from his childhood. 

"It turns out that as a young boy, Greg was into chess and had a mentor," reveals executive producer Carol Mendelsohn. Filling the mentor role is Emmy nominee Ron Glass, who played Det. Ron Harris on Mendelsohn's favorite '70s comedy, Barney Miller.

"A murder at a chess tournament will reunite Greg with his old mentor," Mendelsohn says. "And we'll learn that Greg was a chess wonder kid and could have been a champion, but for some reason gave it up."

The series will cast a young version of Greg for flashback scenes.  

Glass, 68, most recently appeared in Marvel's Agents of S.H.I.E.L.D. and Major Crimes. 

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