The socially stunted guys are nervous when Penny invites them to a party she's hosting.
Naomi refuses to talk about anything personal with Addison or Sam since Sam has taken over the practice; Sam institutes a board to keep track of everyone's patients.
The CSIs uncover a complex counterfeiting operation after a bellboy is found murdered at one of Miami's hottest hotels.
Billie invites herself to Zack's high school reunion but worries that she can't compete with his hot, ex-girlfriend in her pregnant state.
When Barry and his new girlfriend, Ashley, seem to be moving too fast, Cooper, Neal and Kelly try to intervene before he gets in too deep. Meanwhile, Josh’s attempt to outshine his co-worker leads him into dangerous territory.