For Alex Mercer, his wife Millicent and their 11-year-old son Max are everything. But when he and Max find their enigmatic next door neighbour dead in his apartment, their lives are suddenly and irrevocably changed. As the police conduct a methodical investigation, Alex becomes increasingly impatient for them to finish. After all, it so clearly was a suicide. But as new information is uncovered, troubling questions arise. As the knot of suspicion grows tighter, this close-knit family begins to crack.