The seventh book featuring Dirk Pitt, NUMA Special Projects Director and all-round man’s man and action hero, but actually the sixth book as Cussler managed to sell a trunk novel, set and written before his debut novel, having now become a best-selling author. Trunk novels should generally stay trunk novels, and Cussler’s is no exception. I should point out that Deep Six (1984, USA) may have been Cussler’s seventh actual novel, but in 2025 Cussler, who died in 2020, has 27 Dirk Pitt novels in print (the last two written by his son), 21 NUMA Files novels written by assorted hands from his atelier, 18 Oregon Files novels, 15 Isaac Bell Adventures novels, and 12 Fargo Adventures novels. I make that 93 novels. That’s a fucking large, or a fucking productive, hacktelier atelier.
Deep Six is set in 1989, five years after it was published. A tramp freighter disappears in the 1970s with a bank robber aboard. It is discovered ten years later because it was carrying a cargo of barrels of stolen US Army nerve gas, one of which has leaked and killed hundreds of people off the coast of Alaska. Pitt amazes everyone by quickly finding the ship. The barrels of nerve gas are taken away to be buried, but Pitt is intrigued by the ship itself, a Liberty ship from World War 2 from which all identification has been removed. He investigates further, and learns it was operated by a shady Korean shipping company, now based in New York.
Meanwhile, the president of the US, vice-president, speaker of the house, and a senator are off on a weekend trip on the presidential yacht, the USS Eagle (the last presidential yacht was actually the USS Sequoia, which was sold off by Carter in 1977). Overnight, a heavy fog drops, and when it lifts everyone aboard the yacht has vanished. The Administration desperately tries to cover up the fact the president is missing…
… and who has actually been kidnapped by the aforementioned Koreans, who have been paid by the Soviets, and a Soviet neuroscientist plans to brainwash the president and insert a controlling microchip into his head…
It’s action all the way as Pitt ends up involved in the hunt for the missing politicians. A Soviet liner in the Caribbean is blown up and sunk – and Pitt’s latest lover is aboard, so he’s involved in that too. But the Koreans have her, so he’s after them in a desperate race to find their secret laboratory before they kill everyone. The climax involves a battle on the Mississippi delta between the machine-gun-armed Koreans on a tug and a company of ACW re-enactors with muskets on a paddle-wheel steamer. Exciting stuff, even if not in the slightest bit credible. And the only reason Pitt found them is because the Korean shipping company named all their ships after towns on the Mississippi delta – er, what?
I’m beginning to wonder if Cussler had a time-machine and visited 2025. In Night Probe! (1981, USA), the US and Canada merged – which didn’t happen in the real world, obviously, although Trump clearly thought he could make it happen. In Deep Six, the president is controlled by the Soviets (although a microchip in Trump’s brain would be ineffective as his brain is clearly ineffective, but he’s still Putin’s puppet), he wants to pull the US out of Nato, there are troops on the streets of Washington, and the US is no longer a democracy. Hmmm. I don’t recall a tech billionaire who believes the laws of physics don’t apply to him in Raise the Titanic! (1976, USA), however. And while Iceland featured in Iceberg (1975 USA), Greenland wasn’t mentioned.
Still, another twenty Dirk Pitt novels to go…

