Two drunk teenagers start harassing an old lady on a bus until a homeless man steps in and stops them — and it transforms his life. Molly walked up the steps into the bus with great difficulty and was grateful when she felt a strong hand under her elbow, helping her up. She turned her head to smile her thanks and cringed.The hand cupping her elbow belonged to a tall thin scarecrow of a man, clearly homeless, and none too clean. Molly jerked her arm away from the man and said stiffly, “Thank you.” The man smiled sadly. He was used to disgust in people’s faces, the rejection. But Tom was still himself, no matter what. He watched as Molly sat down, her bulk filling two seats.There was something about her that reminded him of his mother.