Did a trip to a cabin in the middle of nowhere bring Leonard, Sheldon, Raj and Howard closer together?
That was revealed on The Big Bang Theory Season 11 Episode 20 when Doctor Wolcott, a reclusive scientist, hosted the men.
Meanwhile, Penny and Bernadette improvised when Amy did not like the tame bachelorette party they planned for her.
Did they find a way to dial the insanity up a few levels?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.