After Robin assaults a girl who is out to ruin Barney's relationship, she is forced to begin court-mandated therapy sessions. Meanwhile, Ted gets too involved in Lily's pregnancy.
Quest roles:
Alexis Denisof(Sandy Rivers), Nazanin Boniadi(Nora), Jeff Probst(Jeff Probst), Kal Penn(Kevin Venkataraghavan), Ellen D. Williams(Patrice), Vicki Lewis(Dr. Sonya), Michelle Diaz(Haley), Tenille Houston(Tara), Tarah Paige(Kersten), Tami Sagher(Paula), Katherine Von Till(Darcy)