NEW : Judge signs order to exhume the body of Drew Peterson 's third wife . Peterson has said he believed his fourth wife left him for another man . Police : Case shifts from a missing persons search to a potential homicide . Friends and family : Peterson's friends say they are shocked by news that police have found evidence in their friend's home, but believe it is not enough to charge them with murder or kidnapping.
NEW : Judge signs order to exhume the body of Drew Peterson 's third wife . Peterson has said he believed his fourth wife left him for another man . Police : Case shifts from a missing persons search to a potential homicide . Friends and family : Stacy Peterson expressed concerns about her husband .