On March 16, 2017, Albino Quiroz Sandoval popped out of the house around 5 p.m. for a little trip to the shop. The 71-year-old lives in Tepoztlán, a small colonial town with little crime, a weekend getaway from hectic Mexico City. Quiroz had been a public school teacher for 48 years. Everyone knows him.
By 8 p.m., he wasn't home. His family grew worried. His son Juan Carlos Quiroz, who was a 90-minute drive away in Mexico City, got a frantic call from his sister.
"We didn't know what to do," Juan Carlos recalls. "My sister and I thought it could be a kidnapping."