Once Upon a Time 7×13 Promo “Knightfall” Season 7 Episode 13 Promo Once Upon a Time 7×13 “Knightfall” Season 7 Episode 13 Promo – Check out the promo for Once Upon a Time Season 7 Episode 13 “Knightfall” airing next week on ABC. Show More… 131 Comments Related Videos Knightfall 1×09 Promo “Fiat!” (HD) Season 1 Episode 9 Promo Knightfall 1×08 Promo “IV” (HD) Season 1 Episode 8 Promo Knightfall 1×07 Promo “And Certainly Not The Cripple” (HD) Season 1 Episode 7 Promo Knightfall 1×06 Promo “The Pilgrimage of Chains” (HD) Season 1 Episode 6 Promo