What classic Agatha Christie adaptation, frequently remade, follows Hercule Poirot as he investigates the stabbing of a ruthless American businessman aboard a luxurious train stranded in a snowdrift?

The classic Agatha Christie adaptation described is indeed "Murder on the Orient Express." This iconic mystery features the renowned Belgian detective Hercule Poirot, known for his meticulous nature and "little grey cells," investigating a murder aboard the luxurious Orient Express. The opulent train becomes a confined crime scene when it is dramatically halted by a snowdrift, leaving the passengers, including the victim, a ruthless American businessman named Samuel Ratchett, trapped together. Ratchett is discovered stabbed multiple times in his locked compartment, setting the stage for Poirot's intricate investigation.

Agatha Christie's novel, first published in 1934, is celebrated as one of her greatest achievements and one of the most ingenious stories ever devised. The inspiration for the story came partly from Christie's own experiences traveling on the Orient Express, including an incident in 1929 when the train was stranded in a blizzard in Turkey for six days. Another significant influence was the real-life 1932 kidnapping and murder of Charles Lindbergh's infant son, which provided the tragic backstory for the victim in the novel.

The enduring popularity of "Murder on the Orient Express" has led to numerous adaptations across various media. Notable film versions include the star-studded 1974 production, which received widespread acclaim and was the last film Agatha Christie herself saw and approved, and the 2017 remake directed by and starring Kenneth Branagh as Poirot. These adaptations, along with television series and stage productions, have cemented the story's place as a beloved and frequently revisited classic in the mystery genre.