A decomposed body is discovered in a tub of acid at a naval base and Ducky and Abby learn that the victim was a submariner.
Feeling inferior to, and looked-down upon by, the new neighbors, Carrie tries to make a good impression, but Doug couldn't care less. Meanwhile, Arthur tries to use Spence for free subway rides.
Doug and Carrie are having fun on their vacation with their neighbors in St. Croix, but once Arthur calls with a quote on the current mold problem in the house, all is not so fun.
A CSI team investigates a mysterious death at Charlie's house. George Eads ("CSI: Crime Scene Investigation") makes a cameo appearance.
Peggy's birthday gift for Al causes quite a stir at the mall.
