What happened in the bloody scissors incident with Boo Radley and his father?Why did he want to do this to his father? Did it succeed or was it...

It may also be useful to keep in mind that the scissors incident was speculation - it is mentioned in the novel that nobody was certain if it actually happened, like most of the other Radley stories. In fact, one neighbor, Miss Maudie I believe, voiced her opinion that it wasn't true at all. Then again, she was a firm supporter of the Radley's and their right to privacy and to not be the center of the gossip circles. Miss Maudie reminds the reader that people should not be judged unfairly - just one theme of the novel.