Agatha Christie's works are always popular. For example, 'Murder on the Orient Express'. The setting on the train is very unique. There are a lot of suspects and Christie manages to make the whole story a very puzzling and interesting murder mystery.
Probably 'Sherlock Holmes' series. The adventures of Sherlock Holmes are well - known worldwide. His brilliant deductions and the various murder mysteries he solves are just captivating.
I think 'The Silence of the Lambs' is also quite popular. It has the unique element of the interaction between Clarice Starling and Hannibal Lecter while also having a terrifying murder mystery at its core. The character of Lecter is one of the most iconic in murder mystery literature.