This past weekend, I read a few Sherlock Holmes stories that I found strangely relaxing, even though at least one of them involves murder. Maybe because each story is like an orderly, manicured garden with well-defined paths. Holmes and Watson are ever the same, with Watson admiring the genius of his friend, and his friend saying that it's nothing at all, you just have to observe things. (In some cases, you also have to be able to distinguish between different kinds of cigar ash, topsoil, etc.) The endings aren't mystifying. Just take the route Sir Arthur Conan Doyle has laid out for you, and you'll be entertained.
(You can also amuse yourself imagining Holmes in lockdown. When not on a case, he enjoys being indoors, experimenting with chemicals, playing the violin, or getting a little coked up.)
All of these are from Sterling Publishing Co.'s volume, The Adventures and Memoirs of Sherlock Holmes (by Sir Arthur Conan Doyle). You can also find the Adventures and the Memoirs online on Project Gutenberg. ("The Crooked Man" is in the Memoirs, and the last two stories in the Adventures.)
Title: The Crooked Man
Crookedness can refer to a physical characteristic or to a moral one. In this story, a man is dead after an argument with his wife, who has fainted away at the scene. There's also evidence that a third person was in the room. Holmes probes a little deeper and discovers a horrific betrayal from decades ago.
Title: A Scandal in Bohemia
Irene Adler is in this one, a woman who looks after herself capably and stays a step ahead of Holmes. Is she the villain of the story, or someone who has been wronged and is trying to protect herself? Holmes falters slightly in this one, I think because he bases his predictions on what a woman would typically do in Adler's situation, and she's unusual.
Title: The Speckled Band
This story involves a country house, a cruel stepfather, and an elaborate method of premeditated murder. What I liked most about it was the sense of dread that builds to the point where everything is revealed.