Obsession: Dark Desires

Sometimes, the only way to stop a madman before he kills again is to get inside the mind of a monster and think like he does. Cops go head-to-head with the most dangerous and deadly criminals in one-on-one battles of wits, only one of them will win.

Operation Undercover is an adrenaline-fueled new series that takes viewers inside real-life, discreet operations run by police to keep communities across the country safe. Led by former undercover agent, Lou Valoze, this six-episode series offers exclusive, unprecedented access to undercover stings targeting arms dealers, drug suppliers, human traffickers and various criminal enterprises. With a 26-year career as an undercover agent, Valoze has faced the Chicago mob, outlaw biker gangs, and domestic terrorists. Now, he brings his expertise to other agents leading high stakes operations of their own.

It's amazing the things that you can inherit from your family gene pool: blue eyes, a beautiful smile, a winning personality. But what about your family's less desirable traits? A grandfather's talent for swindling, an aunt's knack for aggravated assault or even a father's flair for murder.... can you actually inherit evil from your family tree? Evil Kin begs this question as well as whether psychopathic behavior is pre-programmed. From siblings who conspire to kill their parents, to three brothers who grow up independently to become a serial killer, a rapist and a mercenary, Evil Kin follows true-crime mysteries surrounding bone-chilling cases that prove blood is always thicker than water.

I Married a Mobster is an American documentary television series on Investigation Discovery. The series debuted on July 13, 2011.

A look at con artists who relied on deception to get what they wanted.

Across the country, high school football unites small-town communities. But when a heinous murder shatters that Friday night dream world, the crime ripples beyond those immediately impacted, and the community will never be the same again.