These associations enable Rachel to trust her own memories more, and she realises that many of the crazy things Tom told her she did while drunk, but that she does n't remember doing, never really happened. He had been gaslighting her for years, which affected her belief in herself and made her question her sanity. Armed with this sad realisation, and the knowledge that he must have been the one who killed Megan, Rachel warns Anna. When Anna confronts him, Tom confesses to murdering Megan after she threatened to reveal that he had impregnated her. Anna is cowed, fearful for her daughter 's safety. Although Tom tries to beat and intimidate Rachel into keeping silent, she defies him and fights back. Knowing he is about to kill her, Rachel stabs Tom in the neck with a corkscrew. Anna helps Rachel make sure that he dies from the wound. When the police arrive, former adversaries Rachel and Anna co-ordinate their stories to support their actions having been in self - defence.
who killed megan in the girl on the train
Tom Tom Tom Tom