Investigation Discovery continues its heritage of providing in-depth, compelling documentaries & series that challenge viewers to think about key issues that shape our culture and define our world.

Investigation Discovery HD

Investigation Discovery

In December 1991, four teenage girls were brutally murdered in a yogurt shop in Austin, Texas; every lead in the case sent investigators to a dead end; seeing if new information helps solve the case.

48 Hours on ID

The Yogurt Shop Murders

After the murder of a celebrity hairstylist, investigators look to his wife and ask if her alleged affair with her racquetball coach could be a motive for murder.

The Monica Sementilli Affair

After the murder of a promising young cyclist in Austin, Texas, the suspect flees, spurring U.S. Marshals to launch an international manhunt; Jonathan Vigliotti reports.

Capturing Moriah Wilson's Killer

Years before the conviction of South Carolina legal scion Alex Murdaugh for the murders of his wife and son, there was another mystery in Murdaugh country: the hit-and-run death of Stephen Smith, a 19-year-old gay man.

Stephen Smith: A Death in Murdaugh Country

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A series of non-fiction investigations that explore such themes as jealousy, murder and deceit.

S20 | The Monica Sementilli Affair