When it broke a year ago, the reported attempted kidnapping of a teen girl was horrifying enough. Little did anyone know at the time, that it would trigger the arrest of Jeffrey Willis for two even more horrific crimes and possibly solve one of West Michigan’s saddest mysteries in recent memory – that of the disappearance of Jessica Heeringa.

It was the morning of April 16, 2016. A woman called 911 central dispatch to report she had a terrified and hysterical teenager in her house – that the girl had jumped from a moving van and ran to the woman’s home.

And so began an investigation that police and prosecutors say solved the mystery of what happened to Heeringa, a gas station attendant abducted and allegedly killed, three years earlier, as well as the bizarre apparently random shooting death of jogger Rebekah Bletsch in the summer of 2014.

What follows is a chronology of how the kidnapping report triggered the investigation into Willis, resulting in his arrest a month later, and the development of investigators’ theory that his motive in all three crimes was sexual torture. Information was culled primarily from testimony during preliminary examination hearings. Willis’ trial dates have not been set.