Actually, it is nice, reminds me of the stranger but the difference is
The stranger is so fast & let u on ur toes all the time but the end was not very interesting,
However , Safe, there is still suspense but a little slow paced but the end is worth it, it is so nice, does not look trivial, what had been done all the series was for a good reason
Not to mention that: i figured out the killer last episode or last 2 episodes by myself and i was certain