I cannot explain how frustrated I am with this movie.
I knew beforehand that it was based on true events, and by the poster, plot summary and tags, I thought that this was properly handled and portraited. However, not only the pacing was awful, and with various clichés, but in the first half they even had humorous bits?!

Think about it: it was like a movie version of Vincenzo. In this drama they also deal with serious matters in a humorous way, like their critic on chaebol's money power, but instead they replaced them with Italian mafias. However, the big difference and why it was well received, is that Vincenzo was marketed from the beginning as a comedy (amongst other genres) while Toxic wasn't. And it shouldn't have, but it was.

So, to me this is not only an insult on the victims' story, but also to the viewers' intelligence.