Read it through once

There was a stifled groan and the horrible sound of some one choking with blood. Three times the outstretched arms shot up convulsively, waving grotesque, stiff-fingered hands in the air. He stabbed him twice more, but the man did not move. Something began to trickle on the floor. He waited for a moment, still pressing the head down. Then he threw the knife on the table, and listened.