My thoughts ...

-- Initially, I was full of expectations, cos it sells itself as a thriller ... but hey, the pacing was kind of slow (though it suits the mood of the location) ... 

-- However, what I thought was good ...

(i) the last two scenes ... how the soundtrack really "chills" as the camera pans into the house ... and finally into the bedroom ...

(ii) also, the last scene, when Gael returned to ... 

(iii) as usual, at the end of the film, you are free to discuss with others what you think the film is trying to do/say ... in Singapore, it is given a R(A)21 rating ... if you think it is abt the s** scenes, then you would be disappointed ... i presume it is more abt the religious take ...

anyway, it does make you think abt ...
... religion/faith and its challenges ... even more so with the last scene ...
... forgiveness and vengeance 
... present and the past ...
... whether things were plotted all along, or was Gael just a victim of circumstances, or was he just a "survivor" ...
etc

Conclusion:
Hmmm ... recommended ...