"It's funny how the mind works."
-- Monk to Dr. Bell

(S07E05) You kind of knew when you put together the words Monk and submarine you were going to get an unusual episode, didn't you? As a longtime Monk watcher, you know that enclosed places are not Adrian-friendly environs, so when an old friend of Natalie's -- hottie Casper Van Dien (Starship Troopers) as her late husband Mitch's buddy, Lt. Steve Albright -- asked Monk to investigate a suspicious death on the U.S.S. Seattle, trouble would ensue. Was it a contrived situation to get Monk trapped on board? You bet, but you accept that and move on.

What made this episode unique was how Monk reacted. Initially, he ran for the hatch like a crazed three-year-old. But then Adrian concocted a coping mechanism. This was a Monk first. To deal with claustrophia, he envisioned Dr. Bell by his side.