Season two of Unknown Serial Killers of America, premiering Aug. 2 on Oxygen, will expose the crimes of a charismatic drifter ...

Chilling cases reveal the terrifying stories of unknown serial killers whose crimes left investigators searching for answers and communities gripped by fear. Watch Unknown Serial Killers of America, ...

Each year the FBI estimates between 25 to 50 active serial killers hunt their prey in America, taking the lives of hundreds of innocent people annually. Often these killings keep a city on edge, a ...

American society has a dual fascination and fear toward serial killers yet some of the most horrifying cases emerge from unknown criminals who never reached the fame of Ted Bundy or Jeffrey Dahmer.