Tenet: Robert Pattinson and fellow cast members on secrets to Christopher Nolan’s spy epic – all you need to know

• Tenet, which wrapped last year before the coronavirus outbreak, blends sci-fi with espionage – it’s ‘full of intrigue’, says Kenneth Branagh
• To keep the film’s storyline under wraps, pretty much all the cast and crew ‘didn’t even see the full script’, says Robert Pattinson