Sister Phyllis Frelich, an acclaimed actress, will be on CSI Thursday, February 3

Sister Phyllis Frelich, a Tony Award-winning actress, has landed this key role as Mrs. Betty Grissom on CSI. Be sure to tune in to "The Two Mrs. Grissoms," the title of the episode, on Thursday, February 3 on CBS! This episode will also feature other deaf actors Marlee Matlin, Tyrone Giordano, Anthony Natale, to name a few.

A preview trailer can be found at