Season 3 Episodes20
Cast2

Dan Aykroyd
Self - Host

Adam Richman
Self - TV Host/Historian
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Ranked #9 of 20 in Season 3•+0.2 vs season avg
From a doctor who swallowed Yellow Fever vomit to prove a theory, to another who stitched together a two-headed dog, history’s boldest experiments reveal just how far some minds will go.

Dan Aykroyd
Self - Host

Adam Richman
Self - TV Host/Historian
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"Maddest Minds" is episode 19 of The UnBelievable with Dan Aykroyd season 3. It scored 8.3/10 from 17 votes, ranking #9 of 20 episodes this season (season average 8.1). It aired on May 8, 2026.