H.H. Holmes is believed to be the United States’ first known serial killer. In 1886, Holmes, whose original name was Herman ...

Who doesn't love a good crossover event? They're thrilling, unexpected, and bring fan-favorite characters together in ways we ...

Learn more about the crimes of murderer William "Bill" Suff, as told in Oxygen's Unknown Serial Killers of America.

A woman turns killer to prove her husband’s innocence. This stylized thriller dives into the extremes of love and justice — ...