In September 2012, the young Mr. Lemons was trying to repair some pipeline along the floor of the North Sea when disaster struck on the surface 300 feet above, ultimately severing the “umbilical cord” that connected the diver to his ship and stranded him in the pitch-black deep with only seven minutes’ worth of oxygen in his reserve tank.

"Last Breath" delivers every incident with such specificity that it's like a cinematic piece of journalism. Yet it leaves you with a minor tingle of the uncanny.

It’s 40ish minutes of pure suspense and anxiety as the story shuffles between the man at the bottom of the ocean, Chris Lemons (Finn Cole), his fellow saturation divers (Woody Harrelson as Duncan and Simu Liu as Dave) in the diving bell below the waters who are unable to help and the crew in the support vessel above (including Cliff Cutris and Mark Bonnar) scrambling to get their systems back online and operational as the clock rapidly runs out.

Alex Parkinson's true-life adventure thriller, based on his 2019 documentary, recounts the efforts to rescue a saturation diver trapped hundreds of feet below the water's surface.

Woody Harrelson ( Zombieland) portrays Allcock while Simu Liu ( Shang-Chi and the Legend of the Ten Rings) and Finn Cole ( Peaky Blinders) tackle Yuasa and Lemons, respectively. Cliff Curtis ( Avatar: The Way of Water) and Mark Bonnar ( Napoleon) co-star.

Actor Simu Liu joins TODAY to talk about his role in new thriller “Last Breath” about deep-sea divers in a frightening situation after one of them is disconnected from oxygen and communication hundreds of feet below water — and having to share close quarters with Woody Harrelson and Finn Cole on set!