【明報專訊】No spoiler alerts needed. A labyrinth of obscure concepts and sequences, Tenet boasts 150 minutes of mental challenges that have surely beaten audiences' brains out. That's why it's nearly impossible to clearly map all the plot twists in the story, and they aren't what you're going to read. It's obvious that Christopher Nolan, the film's director, incorporated ideas from his previous films. The spy scenes are from Inception, and the uncanny elements bear a resemblance to The Dark Knight Trilogy.