<P> It is revealed that Tom has been living in the crawlspace, rather than transfer to Boston . When Tom saw Steven moving around, Steven blocked him in the crawlspace, hoping he would starve to death . Steven was keeping her disorientated by slipping her with his medicine, allowing him to walk around at night, but also confusing her whenver she saw Tom . When Steven goes to deal with Tom, Mary unties herself and drinks the bottle of soap to vomit the medicine . Dr. Wilson is rushing to Mary's house, but wrecks his car on the way . Mary finds Steven and Tom in the basement where Steven is planning to murder Tom, she learns that Steven killed his father on purpose . Mary and Tom escape the basement and hide in a closet . </P> <P> Dr. Wilson arrives to warn Mary, only to be attacked and stabbed by Steven . Mary tries to leave and discovers Doug's dead body blocking the door, revealing Steven murdered Doug as well . Dr. Wilson, with his dying breath, advises Mary to play along with Steven's delusion . Steven has nailed all of the doors and windows shut to prevent them from escaping, Mary breaks a skylight and pulls up Tom to climb out . Mary then plays along with Steven's delusions until she is able to escape . Mary and Tom run to the lake, where Steven attempts to drown Tom in the freezing water . Mary grabs the hammer Steven threw down and strikes him on the head, finally killing him . </P> <P> Days later, Mary and Tom are seen arriving at the Child and Adoption center . </P> <Ul> <Li> Naomi Watts as Mary Portman </Li> <Li> Oliver Platt as Dr. Wilson </Li> <Li> Charlie Heaton as Steven Portman </Li> <Li> David Cubitt as Doug Hart </Li> <Li> Jacob Tremblay as Tom Patterson </Li> <Li> Clémentine Poidatz as Lucy </Li> <Li> Crystal Balint as Grace </Li> <Li> Alex Braunstein as Aaron Hart </Li> <Li> Peter Outerbridge as Richard Portman </Li> </Ul>

What happens at the end of shut in
find me the text answering this question