You can cut the tension with a knife.

As History's Vikings prepares for the imminent raid on Paris, Ragnar (Travis Fimmel) is down one key member down following the shocking death of Athelstan (George Blagden), perhaps one of the last remaining men he could trust.

In ETonline's exclusive sneak peek at this Thursday's follow-up, Ragnar has a tense conversation with Athelstan's killer Floki (Gustaf Skarsgard) and it becomes immediately clear that the two don't see eye to eye about their recent loss.

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"I miss him ... Athelstan," Ragnar tells Floki while intensely studying a snake and his prey. "I wish he was here with us."

"Since you carry his cross, he is here with us," Floki says.

"He would have been useful," Ragnar laments, while Floki is ready to move on: "We will manage without him."

Something tells us they're in for a big surprise.

Are you on Ragnar or Floki's side? Are you still mourning Athelstan's death? Tell us your thoughts by tweeting Philiana Ng at @insidethetube!

Vikings airs Thursdays at 10 p.m. on History.