Mr. Shadow opened the door to Dr Apple’s office and surveyed the scene. Dr Apple’s head lay on her desk in a pool of blood. On the floor to her right lay a gun. There were powder burns on her right temple indicating that she was shot at close range. On her desk was a suicide note and in her right hand the pen that had written it. Mr. Shadow noted that death had occurred in the past hour. He also realized that it had not been a suicide but a clear case of murder. How does Mr. Shadow know?
Solution: If she has killed herself the last thing in her right hand would have been the gun, not a pen.
