Promised is the fifth episode of the fourth season of Vikings. It is the thirty-fourth episode of the series overall. It first aired on March 17, 2016. It was written by creator Michael Hirst and directed by Helen Shaver.


There's an air of betrayal as those whom Odo trusts plot against him; Ecbert agrees to support Kwenthrith in Mercia. Pregnancy brings happiness to Lagertha and Kalf and a marriage is arranged.


Ragnar and Bjorn discuss whether or not they trust King Harald, parenting, and being husbands, while Ragnar claims he's failed at both. Ragnar appears addicted to Yidu's "medicine," and the two discuss their deepest secrets. Yidu's father is a Chinese Emperor, while Ragnar reveals the slaughter of his England settlement, and that he has lost the desire to explore distant lands. King Harald's brother, Halfdan the Black, arrives in Kattegat and lets Ragnar know he is eager to raid and kill Christians. Meanwhile, Torvi reveals to Bjorn that the ring he's carrying, which he took from the Berserker, is Erlendur's. In Wessex, Aethelwulf and Judith argue over both of their wrong doings, and Judith tells him that they are husband and wife only in name. Aethelwulf agrees with Queen Kwenthrith, and tells his father and King Aelle they need to fight together and restore Kwenthrith's power in Mercia. In Paris, Therese and Roland reveal to Charles that Odo plans to overthrow him. In Hedeby, Lagertha reveals to Kalf she is pregnant, and Kalf asks her to marry him. Moments before their wedding, Lagertha stabs and kills Kalf, reclaiming her status as Earl Ingstad, sole ruler of Hedeby.

Recap Video


Vikings Recap Promised (S4, E5) History



Guest Starring

Additional Cast (in order of appearance)


Episode Deaths


  • John Kavanagh and Kevin Durand are not credited and do not appear in this episode.
  • This episode marks the first appearance of Halfdan "the Black." Historically, King Harald is the son of Halfdan the Black, not brothers.
  • This episode marks the final appearance of Kalf.
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