Making TV is notoriously fast and furious, without the generous cushion of a large film production. But what if you were producing and editing a TV movie that would be the last project released in the 2024-25 Emmy season, and you had less than one month to deliver a working print? For “ Succession ” creator Jesse Armstrong’s highly-anticipated HBO film “Mountainhead,” this was not a “What if?” but a “Must happen.”

“Our title for the show on everything across call sheets was ‘Espresso,’” Emmy- winning editor and co-producer Bill Henry said with a laugh. “That sort of indicated what we were on from the outset.” A look inside the overnight get-together of tech-billionaire pals Randall (Steve Carell), Souper (Jason Schwartzman), Venis (Cory Michael Smith) and Jeffrey (Ramy Youssef), “Mounta

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