Murder in the Submarine Zone (also published as "Nine—And Death Makes Ten" and "Murder in the Atlantic") is a mystery novel by the American writer John Dickson Carr (1906–1977), who published it under the name of Carter Dickson. It is a whodunnit and features the series detective Sir Henry Merrivale.
American writer John Dickson Carr "assumed room temperature" in 1977.
The AI was tripped up by the slang for dying (assumed room temperature).