The Question and Answer section for Rear Window is a great resource to ask questions, find answers, and discuss the novel.
Lisa waves her wedding ring to alert Thorwald to the fact he's being watched.
By the end of the selection, Thorwald is attempting to strangle Thorwald, and Miss Lonelyhearts has been distracted from her intended suicide. The violence is caused by Jeff's suspicions, and Lisa's investigation.
Are you referring to the movie "Rear Window"?