You need the Flash Player version 8.0.0.0 or higher and a JavaScript enabled browser to view this site

Most Evil: John Wayne Gacy

Related Article: Learn more about serial killers.

John Wayne Gacy was a smart businessman, admired by friends and neighbors, but nobody knew the vicious killer who hid behind the mask of a clown. Learn more about serial killers in this video from Discovery

Source:

Investigation Discovery
Related Videos

Related Ad Categories

Upload Your Video/Register

browse videos in
crime & crime prevention

HowStuffWorks.com Videos: Crime & Crime Prevention MRSS Feed

Sort by:

Thieves Love Laptops

Thieves Love Laptops (4:24)

Watch this video about computer theft on HowStuffWorks. Laptops are a necessity, but they're often a hot item for thieves and office "creepers"; estimates indicate that nearly 1,500 laptops are stolen every day. See how Win Magic helps to prevent... More »

Fighting Crystal Meth Labs

Fighting Crystal Meth Labs (4:05)

Watch this video about combatting "crystal meth" labs on HowStuffWorks. Destroying and infiltrating cyrstal meth labs can be a dangerous situation, especially since 10 labs explode every day in the U.S. See how law enforcement fight crystal meth... More »

What Are the Odds? Prison Break

What Are the Odds? Prison Break (2:23)

What are the odds that prisoners in your area will break out? Learn more about odds in this video.

Most Evil: Brady and Hindley

Most Evil: Brady and Hindley (2:07)

When Myra Hindley meets Ian Brady, the Manchester, England couple becomes a murderous duo. Learn more about serial killers in this video.

Most Evil: Murderous Women

Most Evil: Murderous Women (1:49)

Ninety-three percent of murders are committed by men. What motivates the small percentage of women who kill? Learn more about serial killers in this video.

recently added

FBI: Critical Incident: Death in Weimar

FBI: Critical Incident: Death in Weimar (3:59)

In Texas, a preacher and his wife are found brutally murdered in their home. Find out what happens next in this clip from Investigation Discovery's "FBI: Critical Incident."

Wicked Attraction: Murder at Twilight

Wicked Attraction: Murder at Twilight (3:01)

In 1983, 18-year old Judith Neelley became one of the youngest women ever to be sentenced to death. Check out this clip from Investigation Discovery's "Wicked Attraction" series.

Wicked Attraction: Kidnapped

Wicked Attraction: Kidnapped (3:01)

Have you ever wondered what goes through the mind of a victim during a kidnapping? Watch as kidnapping victims resurface after years of being held captive to recount their stories in this clip from Investigation Discovery's "Wicked Attraction"... More »

Wicked Attraction: Death on the Sunset Strip

Wicked Attraction: Death on the Sunset Strip (3:07)

When prostitutes across LA are dying at the hands of two brutal murderers, investigators rally. But will they catch these killers in time? Learn more in this clip from Investigation Discovery's "Wicked Attraction" series.

Wicked Attraction: Driven by Drive

Wicked Attraction: Driven by Drive (2:57)

When serial murderers Debra Brown and Alton Coleman embark on a shocking killing spree, investigators race against time to stop them. Learn more in this clip from Investigation Discovery's "Wicked Attraction" series.

Destroyed in Seconds: Jet Car Daredevil

Destroyed in Seconds: Jet Car Daredevil (3:52)

Watch as a far-fetched stunt to jump the St. Lawrence River back in 1976 comes up short in a spectacular failure in Discovery's "Destroyed In Seconds" series.

Destroyed in Seconds: Bulldozer Rampage

Destroyed in Seconds: Bulldozer Rampage (3:58)

When an angry man bent on revenge builds a customized armored bulldozer to tear apart a small town, he gets further than anyone could have predicted. Watch this clip from Discovery Channel's "Destroyed In Seconds" series to learn what happens next.

Real Interrogations: Weakest Link

Real Interrogations: Weakest Link (2:08)

Sometimes all it takes is a weak link to get names and information on the individuals involved in a crime. Learn more in this video from Investigation Discovery's "Real Interrogations."

Real Interrogations: Lie Detector

Real Interrogations: Lie Detector (2:27)

Investigators use their expertise in detecting lies using a computerized voice stress analyzer in this video from Investigation Discovery's "Real Interrogations."

Real Interrogations: Intimidation

Real Interrogations: Intimidation (1:44)

Things get heated as investigators tell us how they get a confession out of some of the toughest criminals in this video from Investigation Discovery's "Real Interrogations."