Challenging Whodunit Puzzles: Dr. Quicksolve's Mini Mysteries (Challenging Whodunit Puzzles)

Great Quicksolve Whodunit Puzzles

BrainStrains Power Puzzles: 240 Mind-Blowing Challenges

The Mystery of the Russian Ruby (A Pop-Up Whodunit)

Mystery at the Haunted Hotel and the Case of the Missing Hat (Mini-Mysteries Featuring Walt Disney's Mickey Mouse and Friends)

In Praise of Slowness : How A Worldwide Movement Is Challenging the Cult of Speed

The LIttle Giant book of Whodunits

Case Critical: Challenging Social Work in Canada

Eyes Right!: Challenging the Right Wing Backlash

What to Say to Get What You Want: Strong Words for 44 Challenging Types of Bosses, Employees, Co-Workers, and Customers