369 could have been a tighter thriller if it was handled with more finesse and clarity. But in its current form it is still a palpable mystery thriller that is only let down by some of its gaping loopholes and the narrative explanation at the end which is always a mark of a film that is not clever enough to reveal who the killer or abductor is through the screenplay. Except Shafique Rahman, everyone else need acting classes. Plus a bit of English speaking training would also do them good. But that is a suggestion for the entire Malayalam film industry at large.
All in all, I enjoyed the film and would recommend it for an evening watch (even though it pulls from the Golden Palm winning 2007 Romanian film 4 Months, 3 Weeks, 2 Days). But don't go in with high expectations. TN.