Unusual Suspects is an American documentary television series on Investigation Discovery. The series debuted on June 21, 2010. The series showcases many of the most shocking and difficult cases in law enforcement history, and also sheds light on the investigations that led to the arrest of the culprits.

With nearly 6,000 veterinary cases and well over 100 births each year, the team at the Columbus Zoo has no shortage of incredible drama.

The true-life mysteries detailed in this series are about revenge, betrayal and murder carried out by people.

Follows a seasoned detective on the trail of a ruthless killer intent on slaughtering prostitutes along West Hollywood's Sunset Strip. It appears that the murderer's grisly methods are identical to that of London's infamous 19th century psychopath Jack the Ripper – a relentless serial killer who was never caught by police. To make matters worse, the detective soon notices the parallels between the crimes committed by the West Hollywood stalker and those of a serial murderer incarcerated years ago. Could the wrong man be behind bars?

Featuring an all-star cast, the timeless story comes to life in this all-new, feature-length film filled with fun and adventure!

A look at the hunt for California's Zodiac Killer, who murdered at least five people in the San Francisco Bay Area in the late 1960s and early '70s.

A series of shark attacks that happened in the same patch of ocean, the remote islands of the Whitsunday in Australia.

Crime-mystery series that zeroes in on a critical, lost gap of time during the day of a homicide. Once that gap's pieced back together, it breaks the case wide open.

Drawing on spectacular UGC from around the world, Cannibal Sharks pulls in two of the world’s leading shark experts, Dr Mark Meekan and Dr Mike Heithaus, to unpack and analyze the mounting evidence that shark-on-shark attacks happen a lot more than we ever realized.

Logan Burnhardt is the ego-king of the airwaves, but his unflappable persona is put to the test when a terrorist bio-attack unleashes a plague of flesh-ripping maniacs on Los Angeles.

A group of shark experts set out to discover which shark species has the deadliest bite. Using bite force meters, biomedical imaging and a cutting-edge super slow-motion camera rig, they'll document and analyze shark bites like never before

This new original docuseries looks at some of the world’s worst real-life engineering disasters and seeks an answer to the question of what caused the calamity. News footage is interwoven with innovative and illuminating graphics, eyewitness accounts and commentary from experts.

Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan and George H.W. Bush. This is the story of how their war experiences change them, how they emerge from conflict as leaders and how the crucible of war shapes the decisions they make when they reach the White House.

Celebrating 25 years of innovation at the resort including "The Wizarding World of Harry Potter."

Celebrating 25 years of innovation at the resort including "The Wizarding World of Harry Potter."