And Then There Were 64: The Murder on the Links by Agatha Christie

So... there is surprisingly little golf in this Poirot novel, given its title, but there are many, many other things: an unfriendly rivalry between detectives; not one, but two romantic subplots; and lots of “continental” flair. Oh my. Come play with us… not in a creepy-haunted-hotel-twins kind of a way, but in a tumbling-vaudevillian-twins kind of way. I.e., goofy, and dopey, but more fun.