Jennifer Manley

When Ellen (guest star Leigh-Allyn Baker) and Rob (guest star Tom Gallop) announce that they are getting married, Grace (Debra Messing) feels forced to reveal to Will (Eric McCormack) that she once slept with Rob - a secret that surfaces at Ellen's bachelorette party, and prompts Ellen to seek revenge. During Rob's bachelor party, Jack (Sean Hayes) is confused and baffled by his reactions to the entertainment. Megan Mullally also stars.

In 1989, a homely 33-year-old woman was gunned down in an alley. Now, the unsolved murder case is reopened when a tape of the victim, made for a dating service, is found after a man's suicide. Apparently, the man was watching the tape when he killed himself.

When the Party Down team caters the Brandix corporate retreat, Casey strikes up a friendship with the sports star guest speaker, making both Henry and Roman jealous.