Calvin reluctantly invites Dave to join his guys' night at home with Malcolm and Marty, while Gemma and Tina take their first girls' trip to Vegas and find themselves unexpectedly in the spotlight.
The team investigates the death of a real estate agent with gang ties in his past; Jane looks for leads on a new connection to Red John.
Trying to rebound from his recent separation, Walden goes looking for Mrs. Right, while Alan has an opportunity to reconcile with his on-again, off-again girlfriend Lyndsey (guest star COURTNEY THORNE-SMITH).