Board Thread:Off Topic/@comment-26073440-20180320151347/@comment-28734106-20180322230234

STOP. STOP STOP STOP. IN THE FIRST VERSION OF THE RIDDLE, THE POLICE GOT THERE AT 12 PM. BUT NOW, THEY GET HERE AT 10 AM?

anyway i'm just gonna post the other riddle here so i don't have to switch between threads

At 10 A.M., a man’s wife was murdered by a robber who stole her diamond ring. The police came at 12 P.M. The man said that he found a knife, but, lucky for the man, he had a fingerprint kit. But, the knife had none, because the murderer wore gloves. The police looked at the scene. The man was delcared the murderer. How is this so? And also it has something to do with the wife's coffee.