India, Sept. 17 -- Amid an investigation into a "mystery house" in Philadelphia's Olney neighborhood, authorities have found a disturbing video of a woman being strangled. The investigation centers on Raymond 'R.C.' Horsch, a photographer of sexually explicit material who died in 2025 at 82. He shared the house with his son, Eugene Horsch.

Inside the house, police have found one million images and videos, including footage that police say appears to show women unconscious, injured or dead. As many as seven women who disappeared over more than a decade ago have also been linked to a Philadelphia house.

In a set of videos dated from 2017, Raymond is seen nude with a woman inside the house, Deputy Police Commissioner Frank Vanore said, per...