Identity Unknown

What was supposed to be a long overdue family vacation ended with devastating effects. The loss of a loved one is something no one prepares for. But years later when a string of murders start happening around Izzy Scott, it leads to questions about that night so many years ago when her sister Morgan was murdered. Does the killings have anything to do with that night? Is it the same killer returning to finish his job? Will Izzy and her friends make it out alive?