Mycroft Holmes doesn’t really do much in Enola Holmes 2 because he’s mostly absent from the film. The story leaves him out, and the reason given by the director was that Sam Claflin wasn’t available due to scheduling, so the movie shifts its focus to Enola and Sherlock instead.

What the movie does with him

  • He is not a major on-screen presence in the sequel.
  • There’s hardly any mention of him during the runtime.
  • The plot uses his absence to center Enola’s dynamic with Sherlock.

Why he’s missing

The filmmakers said it was a practical scheduling issue, not a creative decision to permanently remove the character. Interviews also suggested they’d be open to bringing him back in a future installment.

In plain terms

He’s not killed off or given a dramatic exit in the sequel. He’s simply written out of most of the film because the actor couldn’t return, and the sequel pivots to the Enola–Sherlock relationship.

TL;DR: Mycroft is basically absent in Enola Holmes 2 because of a scheduling conflict for Sam Claflin, and the movie barely references him while focusing on Enola and Sherlock.