Watson wrote a letter to Mr. Holmes tells a story that happened to Sir Henry . Sir Henry is in love with Miss Stapleton. The truth is he wants to marry her. But Mr. Stapletondid not agree. Because he loved sister very much.
watson told Sir Henry that He had seen Barrymore signal with a candle .She was told that her brother Selden is murder.the field transmitter candles is to bring food and clothes.He was sending a signal to tell Selden he was coming