Encyclopedia Brown and the case of the disgusting sneakers
Donald J. Sobol
America's Sherlock Holmes in sneakers continues his war on crime in ten more cases, the solutions to which are found in the back of the book.

by Ken Weber (2003)
It will take all of the detective skills you've got to solve each one of these 40 new twisted tales of intrigue. Read carefully to collect the subtle clues that expose the enigma of each case. If you're still stumped after five minutes, check the back of the book for the secret of whodunit and why. Ken Weber is an expert craftsman of mystery and intrigue. He lives in Toronto, Canada, where he is a professor of special education at the University of Toronto.
Donald J. Sobol
America's Sherlock Holmes in sneakers continues his war on crime in ten more cases, the solutions to which are found in the back of the book.
Fran and Lou Sabin
After working hard to get them painted in time for the big Easter egg hunt, the Maple Street Six discover some of the eggs are missing.
John Sandford
The first body is of a young woman, found on a Minneapolis riverbank, her throat cut, her body scourged and put on display. Whoever did this, Lucas Davenport knows, is pushed by brain chemistry. There is something wrong with him. This isn't a bad love affair. The second body is found three weeks later, in a farmhouse six miles south. Same condition, same display--except this time it is a man. Nothing to link the two victims, nothing to indicate that the killings end here. "This guy "Lucas said. He took a deep breath, let it out as a sigh. "This guy is going to bust our chops." And soon he is going to do far, far worse than that
Pol Koutsakis
Stratos Gazis hates being called a contract killer. What he is, is a conscientious fixer. He fixes problems that are only mentioned in whispers. That very few can fix. Things that people are willing to pay handsomely to get done. But now, in the midst of the Greek economic crisis and political turmoil, during a melancholy winter which makes life in Athens even more unbearable than usual, this assassin with the strict moral code is about to get involved in the most high-profile case of his career. Helped by three childhood friends, he discovers that truth is, as ever, a relative thing.