What are the most popular Agatha Christie romance novels?

Definitely 'Murder on the Orient Express'. It has been adapted into movies multiple times, which shows its popularity. The setting on the train and the diverse cast of characters make it really engaging.

One of the most popular is 'Murder on the Orient Express'. Everyone loves the way Poirot solves the mystery on the train. 'And Then There Were None' is also very popular. It has such a unique plot. Another popular one is 'The Body in the Library'. It has all the elements of a classic Christie mystery.

Well, 'The Murder of Roger Ackroyd' is also very popular. It has a great plot twist that really shocked readers. 'Death on the Nile' is another well - loved novel. It takes place on a cruise ship and has a complex web of characters and motives.

One of her most popular novels is 'And Then There Were None'. It's a classic mystery where ten strangers are lured to an isolated island and are killed one by one, leaving readers on the edge of their seats trying to figure out the identity of the killer.

Some of the most popular ones are 'Murder on the Orient Express'. It's famous for its complex plot and the confined setting of the train. Another is 'And Then There Were None', which has a really intriguing and unique murder mystery setup.

One of the most popular ones is 'Murder on the Orient Express'. It has a complex plot with a murder taking place on a train full of suspects, each with their own secrets. The solution is both surprising and satisfying.

One of the most popular ones is 'Murder on the Orient Express'. It features a complex mystery set on a train.

Some of the most popular ones are 'Murder on the Orient Express' and 'And Then There Were None'. These novels are well - loved for their intricate plots and clever mystery - solving.

'And Then There Were None' is also extremely popular. Its unique setting and the way the mystery unfolds make it a favorite among many mystery lovers. The sense of isolation on the island adds to the tension and suspense of the story.

Definitely 'And Then There Were None'. Its isolated - island - based mystery and the countdown of deaths make it very appealing. Also, the psychological aspect of the characters is well - explored. It has been adapted into various forms multiple times, which also shows its popularity.