Pete suspects that his brother Adam may be responsible for their mother's illness. Meanwhile, Violet discovers quite by chance that Sheldon is dating Marla Phillips, the doctor who panned her book, and who Violet considers as her archenemy. Cooper's patient is a musical prodigy with a debilitating brain tumor.
Elenco: Kate Walsh , Benjamin Bratt , Paul Adelstein , KaDee Strickland , Caterina Scorsone , Matt Long , Taye Diggs , Amy Brenneman , Griffin Gluck , Brian Benben , Stephen Amell .