I liked this. Reminded me of Sleuth.

This movie could have been a bit better with some polishing.

The dialogue from "Heres Johnny..." thru to "He says his names not Johnny or Jack" doesnt work at all, for example.

And the lighting was too dark in places.

But basically it was a good little twisty thriller. I'm surprised at all he negativity. I'd rather see something like this with a (fairly) original plot and (some) good dialogue, than the umpteenth version of the rom-com, or the anguished, hardbitten hero saves the day.