This Lie Will Kill You

One year ago, there was a party.
At that party, someone died.
Five teens each played a part and up until now, no one has told the truth. 
But tonight, the five survivors arrived at an isolated mansion in the hills, expecting to compete in a contest with a $50,000 grand price. Of course, some things are too good to be true...
Now they realised they have been lured together by a person bent on revenge, a person who will stop at nothing to uncover what actually happened on that deadly night, one year ago.
Five arrived but not all can leave. Will the truth set them free? Or will there lies destroy them all?