<P> 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 . </P>
<P> 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 . </P>
who killed megan in the girl on the train
who killed megan in the girl on the train
Tom
Tom