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David Harbour Exits Tony Gilroy’s 'Behemoth!' as Will Arnett Steps In

Searchlight says he stepped back, with industry sources citing a break after the 'Stranger Things' rollout.

Overview

  • A Searchlight spokesperson confirmed Harbour has stepped back, and multiple outlets report Will Arnett is replacing him.
  • Trade reporting indicates the recast is not expected to delay the film’s schedule or wrap.
  • Harbour had already filmed scenes in Los Angeles with Olivia Wilde after production began in October 2025.
  • Behemoth! is written and directed by Tony Gilroy and follows a musician who returns to Los Angeles, with Pedro Pascal and Olivia Wilde among the cast.
  • Harbour has not issued a substantive public comment, as coverage attributes his exit to rest and notes recent personal headlines for context.