Investigation Discovery continues its heritage of providing in-depth  compelling documentaries & shows.

Investigation Discovery

Police and amateur sleuths join forces to reveal a killer with many names.

The Chameleon Killer

Unmasked

Amateur sleuths pick up the plight of a horrific New Hampshire cold case.

The Bear Brook Murders

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Deep in the woods of New Hampshire, police find barrels with the remains of mutilated victims; the hunt for a serial killer stretches to California as detectives unravel a tangled web of abuse and murder created by one man with many fake identities.

S1 E2 | Unmasked

E2 | Unmasked

E1 | The Bear Brook Murders