A conspiracy theory enthusiast and his friend probe infamous unsolved crimes.

Investigating the unsolved slaughter at Hinterkaifeck Farm.

Trying to determine what happened to Elisa Lam in a Los Angeles hotel in 2013.

Elizabeth Short, the woman now known as the Black Dahlia, was found murdered in a Los Angeles park in 1947.

Questioning if the Dyatlov Pass Incident that killed nine hikers was an expedition gone horribly wrong, or proof that we aren't alone.

Finding who killed West Coast rap icon Tupac Shakur.