The Resident surprised me... first because stars Hillary Swank, who also is the producer and who also won 2 Academy Awards, and second because it's a Hammer production, which historically produced all of the most known B movies in history.
For me it's just a reworking of Sleeping With The Stranger (1991), the difference here is that the main character doesn't know it. This could be a lot entertaining if Hillary Swank wasn't attached to it, and could be a lot interesting and nostalgic if the movie wasn't too serious.
I can't blame the plot, which is very interesting though the great collection of clichés and some bad character's development destroy the main subject and entire movie.
It has a good beginning and is never hidden from the audience the mad obsession of Jeffrey Dean Morgan's character. He portrays it perfectly when he's frustrated or punishing himself when rejected. There's a moment when he asks Hillary Swank's character what is happening between them because she was who kissed him first, and then she says: "THAT'S WHAT PEOPLE DO!". That scene is very interesting because we can feel his pain and the movie was exploring it great till that moment. Then everything become a completely mess and the movie transforms into another regular thriller with that ordinary 'cat & mouse' thing and Jeffrey's character, which was just a regular guy suffering from obsession, becomes an ordinary serial killer.
The movie ends as it should exactly in the moment that you were expecting since the very first minute, or the very first trailer if you have watched.
Is just an empty movie with some rare good moments and a lot of other lazy I've-seen-that-before moments, a waste in Hillary's career.