

Later, she shows Sullivan an old text message from Madsen: “I have (murder) a plan ready,” he wrote, describing how he’d bind, torture and dismember Sara on the Nautilus if she didn’t get back to work. He just couldn’t have done it, insists Sara, a young girl with wide eyes and a tousle of curly hair. She’s more interested in spending time with the volunteers, because they’re all asking themselves the same question rattling in her mind: How did they miss Madsen was a madman? The last thing Sullivan directly hears him say is that he left Wall ashore, alive. After Madsen’s arrest, she never interviews him again. Just as compelling is the second timeline where Sullivan rewinds back to the first email she sent Madsen after watching his viral Ted Talk - “Emma, you are about to submerge into quite a snake pit,” he responds - leading up to the day of the murder, as she sifts through her footage, searching for warning signs. The first kicks off with Madsen’s team frantically hoping to find its hero alive, and from there sloshes through the drip of information as the killer changes his story again and again as pieces of Wall are dredged from the sea floor, all the way up to Madsen’s trial. “Into the Deep” is structured into two timelines. Restrained, humanist and chilling, “ Into the Deep” is both a portrait of evil and a story of the workers left ashore floundering to understand how they devoted their lives to a fiend. But Wall isn’t - and the documentary turns into a rare opportunity to study a murderer before his first kill. Madsen is found and flashes a thumbs up to Sullivan’s camera. Sullivan had been filming Madsen, a hobbit-y egotist with electric blue eyes, for 18 months, and until that day, she believed she was making a film about his attempt to blast into space on a scrappy, self-made rocket, with the help of a dozen unpaid volunteers who believed in his charismatic DIY hustle. Documentary filmmaker Emma Sullivan was already there when inventor Peter Madsen’s submarine, the UC3 Nautilus, went missing off the coast of Copenhagen in August 2017, with journalist Kim Wall on board.
