Unknown Caller

I hope that they make a second part to this because I would love to know what the killers motive was. A few questions left unanswered that for someone like myself always has, but overall this was a really good film. I am a thriller fanatic and this film had a lot of great suspense to it. Hopefully we can have an opportunity to work with their team one of these days because their stuff keeps getting better and better each time. Great job all around, the actors did a phenomenal job on their parts, only reason I maybe give it a 9 and not a 10 rating is I wish it was a little bit longer. It's an hour long but like I said, I do have a few questions remaining as in what was the reasoning? Why was the killer after them? Maybe they left it that way for a part two? Hope so. Overall great job! Can't wait to see the next one?