The story of the McStay family intrigued me from the time I first heard about their sudden disappearance from their California home to the discovery of their bodies in the desert in the fall of 2013. By all accounts, Joseph McStay, age 40, and his wife Summer, age 43, were happy and living the American dream. They had recently moved to a home in the suburbs of Fallbrook with their sons Gianni, age 4 and Joseph Jr., age 3, with plans to renovate it. Joseph ran a successful decorative water fountain business and he and Summer doted on their two young children. In February 2010 Joseph’s father Patrick received an e-mail from one…