Philly serial killer probe could expose larger network behind apparent 'snuff' films, expert says

The potential serial killer investigation involving gruesome images discovered at the home of a dead pornographer could take a much darker turn if it turns out the sadistic images were being distributed to a wider network, according to a prominent police and forensic psychologist.

Raymond "RC" Horsch, an 82-year-old who produced brutally themed pornography and books, died last year. But after his son Eugene Horsch, 44, was arrested in June on charges involving unlawful firearms and forgery...