(Ans:AI) Yes — the Tamil movie Nilgiri Express (1968) is inspired by a story of Agatha Christie, particularly 4.50 from Paddington.
The connection
• 4.50 from Paddington is a Miss Marple mystery where a woman sees a murder on a passing train, but no body is found.
• The investigation then begins to uncover what actually happened.
Tamil adaptation
Nilgiri Express follows a similar idea:
• A murder connected to a train journey.
• Suspense about who committed the crime.
• A group of suspects and hidden identities.
• The mystery slowly unfolds during the journey.
The film starred:
• Sivaji Ganesan
• K. R. Vijaya
• Major Sundarrajan
Interesting fact
During the 1960s and 70s, several Indian filmmakers adapted Agatha Christie–style mystery structures without officially crediting them.
So Nilgiri Express is not an exact scene-by-scene remake, but the core mystery idea clearly comes from Christie’s novel.
If you want, I can also tell you something surprising:
another famous Sivaji Ganesan thriller was also inspired by Agatha Christie, but most people don’t realize it.
Tamil cinema has adapted several Agatha Christie novels and plays into mystery thrillers, most notably Nadu Iravil (1970) and Aduthathu (2011), both based on And Then There Were None. Other adaptations include Puriyadha Pudir (1990), based on The Unexpected Guest.