When an undercover cop in Baltimore involved in a mob investigation goes missing, the BAU believes a serial killer may be responsible.
Ron becomes a wimp after he and Tammy 1 get back together and Leslie tries to save him, Ben discovers that Tom's business is hemorrhaging money, and Ann has a frustrating experience shooting a diabetes PSA with Chris.
The gang rips the bar apart when Robin returns stating that he used to hide million-dollar money belts.
When the guests return to Cheers following Woody's wedding, a carelessly discarded cigarette sets the bar on fire.