A Pennsylvania murder case went cold for years until police started asking questions about their own

 A Pennsylvania murder case went cold for years until police started asking questions about their own

The revelation that fellow authorities allegedly “protected” an alleged murderer left detectives baffled — and Joy Hibbs’ family furious.

Hed been trying for almost a year to talk to the former police chief.  
Sgt. Mike Slaughter, a police detective in suburban Philadelphia, wanted to interview the retired chief, Thomas Mills, about a…