Castle star Nathan Fillion has revealed that his character will feel threatened by Beckett’s new love interest in the upcoming third season.

Fillon joked to Entertainment Weekly that he had also been intimidated by 6ft3in actor Victor Webster on-set.

“I don’t look up to many men, but that guy is tall,” he said. “He’s big. I stand next to him and I’m eye to eye with his chin.”

It was previously reported that Webster’s character Josh Davidson would be a mysterious “motorcycle guy”.

“That’s [Beckett] rebelling,” explained Fillion. “That’s [her] trying to lash out.”

He added: “Castle’s doing the same thing. There’s this attractive brunette [in Beckett] that he’s been chasing for ages. Who does he go with? An attractive blonde.”

Series creator Andrew Marlowe recently admitted that Castle and Beckett would eventually get together.

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