As we brace for Mission: Impossible – The Final Reckoning, we're rewinding to 2023's Dead Reckoning Part One — the high-octane chapter that redefined Ethan Hunt’s mission and introduced a terrifying new adversary: a rogue AI known as the Entity. With globe-trotting action, emotional stakes, and a haunting loss that still stings, we break down how this installment set the stage for the franchise’s endgame. From the sunken secrets of the Sevastopol to the chaos aboard the Orient Express, we unpack the characters, betrayals, and bold storytelling choices that made this film a pivotal turning point. This isn’t just another mission — it’s the beginning of the end.