A Hole in Space by Larry Niven

The Perfect The invention of displacement booths produced one hell of a crime wave. If a man in, say, Hawaii could commit murder in, say, Chicago and be back in the time it would take him to visit the men's room, he would have a perfect alibi. And the police would have a problem. But that's only one of the problems found in Larry Niven's universe, in this collection of stories all about teleportation, deep space, black holes, artificial worlds and Louis Wu--our old friend from the "Known Space" cycle--Niven once again proves he's a master builder of fantastic worlds!