 Thanks to a clause in executive producer Martin Scorsese's contract, he had to approve all final cuts of the film, which resulted in Gomez-Rejon's being able to raise $1 million to complete post-production, as well as do one day of reshoots in England with Cumberbatch, Middleton and Hoult, rounding out their characters.The film was originally scheduled to be released by The Weinstein Company on December 22, 2017, and then rescheduled for November 24, 2017.It had its world premiere at the Toronto International Film Festival on September 9, 2017.