After Denny learns some disturbing news about the progression of his Alzheimer's disease and that an experimental drug might help, Alan tries to convince the Massachusetts Supreme Court to let his best friend have access to it. Meanwhile the murderous Catherine Piper returns, and Jerry and Katie take on the case of an ambitious student accused of cheating on her SATs.
Elenco: James Spader , William Shatner , Candice Bergen , John Larroquette , Tara Summers , Christian Clemenson , Gary Anthony Williams , John Larroquette , Julie Bowen , Lake Bell , Mark Valley , Monica Potter , Rene Auberjonois , Rhona Mitra , Saffron Burrows , Tamara Feldman , Tara Summers , Taraji Henson , Taraji P. Henson .