Lassiter is getting married, so Shawn, Gus, & the others guys throw him a bachelor party, while Juliet, Karen throw a bachelorette party for Marlowe. In route to the wedding, they encounter a local mob boss.

Does Lassiter end up with Marlow?

Marlowe and Lassie got married later in that season in "Deez Nups," and she gave birth to their daughter, Lilly Nora Lassiter, in the eighth and final season.

Does Carlton get back with his wife?

At the end of the episode, it is revealed that she is allowed to live with Carlton after Ursula became a couple with Woody, the department's coroner.