It began as a weekend of football, parties, late-night food and good friends -- a normal Saturday night in the college town of Moscow, Idaho. But Sunday morning, four University of Idaho students, Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin, are found stabbed to death in their beds. Through friends, witnesses, video surveillance and social media footage, in Episode 1 we get to know who the victims were and reconstruct their final hours.