All the Old Knives

The rendezvous location where Henry and Celia have dinner is supposedly the wine-only "Vin de Vie" restaurant in Carmel when, in actuality, the glass-walled restaurant with ocean views was built on a soundstage in London using an LED backdrop. It looks remarkably like Canlis in Seattle

Near the beginning of the film, Chris Pine's character drives to Carmel-by-the-Sea. But he's shown driving south on the Pacific Coast Highway over Bixby Creek Bridge, which would take him in the opposite direction.