Ranked #1 of 7 in Season 9•+0.9 vs season avg
To some, nurse Charles Cullen was a friendly face, always willing to lend a hand. None suspected what he really was: a relentless and ruthless killer.
Fred Dinenage
Self - Narrator
Elizabeth Yardley
Self - Expert
Geoffrey Wansell
Self - Expert
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"Charles Cullen" is episode 10 of World's Most Evil Killers season 9. It scored 8.4/10 from 5 votes, ranking #1 of 7 episodes this season (season average 7.5). It aired on March 11, 2025.
