YES IT CAN HAPPEN TO ANYONE IN REAL LIFE so regardless of 3★ rating, I highly recommend for people to watch this movie.
<Plot, SPOILER FREE>
It's about how an Australian photographer who is backpacking in Berlin ,not familiar with German, is exploring the city in hopes to finding a deeper meaning/purpose in life. In that unfamiliar environment she comes across a German man who, can not only speak her language, but also has a charming personality. What initially feels like a spark and cute little experience in a foreign land turns out to be a foreigner's worst nightmare, as he turns out to be psychotic sociopath who entraps her in his house in an isolated building where the windows are made of bullet proof glass & are double paned and the doors are locked. Seems impossible but will she escape? if so how?
<for those who feel this movie is slow, SPOILER FREE>
For a theme like this, character development is very important and that could only be shown with day to day normal experiences. This movie is successful in explaining the why's & how's of the whole incident. Hence it's easy to feel that it can happen to anyone !! Also slow scenes after the entrapment were required to depict the seriousness and anxiety faced by the main character.
<acting, SPOILER FREE>
Teresa Palmer shows excellent acting skills and successfully portrays an indecisive easy going, not so confident girl in a new city.She is 100% believable as a victim who has to accept the present scenario of her not getting out soon. Fragile when confronted by her captor, has no option but to give in.
Max Riemelt is a charming captor who doesn't seem evil at all. Although he does show his mental instability and lack of control of situations at times he does seem like a harmless school teacher. He is quite believable but casting for this role could have been better as Max Reimelt seems charming ALL THROUGHOUT. NOTHING ELSE.
<hype about the ending, SPOILER FREE>
How it ends was great and realistic!! but IT FELT HIGHLY RUSHED. The pace of the movie and that of the ending didn't seem to match. The climax should have been shown in detail as we, as the viewers, also want to resolve our feelings of curiosity.
<reason for 3★>
the ending could have been better or rather been better paced!! Also felt for the key role of the captor→ casting could have been better.