A judge sentenced Christopher Perrien to life in prison without the possibility of parole for killing Michael and Teri Greene. Michael Greene, a retired state trooper, was found shot to death at his home in Delta Township in September of 2008. His wife Teri was also shot before her body was dumped in a backyard pond. Perrien was serving time in the Eaton County jail before the murders. He used a fake document given to his attorney by an acquaintance to get let out on work release. The .38 revolver and some of the items he stole from the Greene's home after the murders were found in a storage unit he'd rented.