- Megan Lemons
Since you don't say which mystery you like, here are some you might like.
London Calling / Edward Bloor.
Seventh-grader Martin Conway believes that his life is monotonous and dull until the night the antique radio he uses as a night-light transports him to the bombing of London in 1940.
The Ruby in the Smoke by Philip Pullman
In nineteenth-century London, sixteen-year-old Sally, a recent orphan, becomes involved in a deadly search for a mysterious ruby. (If you like this one, there are two more in the series!)
The Mysterious Case of the Allbright Academy, by Diane Stanley.
Eighth-grader Franny and her friends investigate why most of the students at their exclusive boarding school are brilliant, beautiful, and perfectly behaved.