I have always loved to watch Miss Marple and Hercule Poirot. Of course, I try to solve the crime first.
It's just so much fun watching them figure everything out. It's also fun to watch their relationships with others, how they interact and respond to comments and behavior of those around them. That's part of the fun of trying to figure out whodunit!
I'm partial to the older 1940's and 50's movies and haven't paid much attention to the current mysteries. Hopefully, you can bring me into the 21st century regarding mystery movies.