«Five-minute Mysteries 2» by Ken Weber

The perfect books for when you have a few minutes to kill.
If you've got the time, we've got the crime. Test your detective skills and powers of deduction with 80 of the best quick-read whodunits in the popular Five-minute Mysteries series.
Here's the idea: take about five minutes and read a mystery. The stories – some about the crime, some about evidence left behind, or perhaps the getaway or the investigating detective, and so on – are told with all the clues you need to solve the question posed at the end. The problem is yours to solve: How did the attorney know that the skeleton was dumped into the trench the night before? How did the investigator know which dead man was really the driver of the bullet-riddled car? What tipped off the investigator as he inspected the scene of the murder?
The cases presented are rated from easy to moderate to challenging.
Some of the mysteries you'll unravel quickly; others will remain unsolved for a long time. Or at least until you go to the back of the book where the solutions are revealed! But you wouldn't want to spoil the fun, would you?
Five-minute Mysteries 2 is the most fun puzzle and mystery fans can legally have. Look for other titles in the series.