The disappearance of the McStays haunts police for 3 years until their remains turn up in the desert. Prosecutors say evidence proves Chase Merritt killed them, Merritt says he's innocent, claiming they are misinterpreting the facts.

The McStays were an average family living in Fallbrook, California. Joseph owned and operated a small business which provided water fountains, both manufactured and custom made. Summer was a stay-at-home mom of 2 beautiful boys, Gianni, aged 4 and Joseph Jr, aged 3. In early February, 2010, this seemingly normal family disappeared. At their home in Fallbrook, everything looked normal, other than eggs left out sitting on the kitchen counter, 2 small bowls full of popcorn on the family room futon, and the family's dogs locked in the backyard without food or water. Several days later, the family's SUV was located in a parking lot near the US/Mexican border, but there was no sign of the family anywhere. Law enforcement discovered CCTV footage of a family of 4 crossing the border at night, but it was difficult to determine if the 4 people were actually the McStays. Did this family leave their house, pets, money, and family behind and flee to Mexico? Or did something much more sinister occur, preventing the family from returning to the lives they so loved?—Marla Singer