June 18, 2014. Justin Ross Harris straps his 22-month-old son Cooper into a rear-facing car seat located in the back of his SUV after exiting an Atlanta Chik-Fil-A restaurant where the two just ate breakfast. He kisses the boy on the head and says "I love you", before getting in the vehicle and driving off. But instead of making a left turn at the next intersection to drop Cooper off at daycare, Harris continues straight down the road until he arrives at work. Seven hours later, upon leaving his office for the day, with the temperature nearly 90 degrees, the father realizes every parent's worst nightmare: Cooper is dead in the back seat, a victim of hyperthermia. As police investigate, what initially seems a tragic accident on the surface soon reveals the potential for a much more sinister reality lurking beneath. Join host Ryan Kraus for a fascinating journey through the psychology of this mysterious event to undercover the secrets lurking in Ross Harris's mind.