As a thriller genre movie, Intruder does well at its pace with constantly giving questions to audience what the secret is hidden by his sister. It describes detailed and rich layer about Seo-Jin's mental status after her wife' car accident but also creating much suspicion between people in the family which I did enjoy a lot. Both main actors are brilliant. It so happened I watched another Intruder by Dennis Quaid this week. What's wrong with the Director? The only plot he could think is the intruder licking a woman. I just can't believe such cheap and cheesy plot can be made.