CBS | 9:00 pm
When the body of a homeless man reveals an unusual clue shared by others in earlier years, Rossi (Joe Mantegna) and his team investigate in "Surface Tension." Jane Lynch reprises her guest role as Reid’s (Matthew Gray Gubler) mother, who leaves a clinical study to live with her son again. The guest cast also includes Beth Maitland ("The Young and the Restless"). Paget Brewster, A.J. Cook and Kirsten Vangsness also star. Another episode follows.