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Check out highlights from Episode 15, "History's Greatest Unsolved Mystery," to hear Jason Biggs' theory about the Zodiac Killer.
Craig and the panel picked Stonehenge as history's greatest unsolved mystery. Watch Winner's Circle to see why it won.
Watch Craig's opening monologue from Episode 15, "History's Greatest Unsolved Mystery," for a look at whodunits even Jessica Fletcher couldn't solve.
00:54 — In the premiere of this series, inspired by YouTube's FailArmy and featuring comedians and celebrities analyzing viral videos, an emergency medical te (more…)
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Here's how everything changed in "Chapter 6"