A big Halloween party at an apartment complex in Redmond, Washington. Themed rooms and costumed partygoers. But by the end of the party, one of the hosts is dead. The police look to the partiers as the prime suspects: was it the guy in the devil mask, the bank robber, the construction worker? As investigators comb through forensic evidence, witness testimony, DNA, and even consult with a psychic, they zero in on one suspect in particular. But for what reason? Host and reporter Matthew Shaer (Over My Dead Body) returns to the scene of the crime, speaks with everyone about a night that still haunts them years later. It’s a series about race and policing, mislaid justice, cutting-edge science, and the kinds of weighty choices that cops and prosecutors make every day -- choices that, once made, are difficult to reverse.