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MAE ABDULBAKI -The demon-killing knife was a choice weapon for Sam and Dean throughout Supernatural. But its use in season 4 may have created a confusing plot hole.
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MANDY CARR -Supernatural tied up everything in season 15, but it also ended with a plot hole. Fortunately, an early episode in the series explains this.
screenrant.com -BY SAIM CHEEDA -From inconsistencies with his past to his mysterious powers, some Dean Winchester plot holes never received closure in Supernatural. So what are they?
screenrant.com -BY SAIM CHEEDA - Plot holes like the Winchesters' endless resources and Castiel's powers have confounded Supernatural fans, but the answers have always been there.
screenrant.com -BY ELISABETH MCGOWAN - After a staggering fifteen seasons, is it any wonder that sometimes Supernatural let the little details slip past them?