Mexico's most fearless regional correspondent was found dead in her bathtub, and the official investigation collapsed into a confession extracted under torture and a cover-up that implicated the state itself.
At 4:37 PM on 12 December 1969, a bomb tore through a bank in central Milan, killing seventeen people — and the investigation that followed destroyed more lives than the explosion.
A British backpacker was shot dead on one of the loneliest roads on Earth, his body hidden so thoroughly that a convicted murderer's secret — where he put Peter Falconio — has outlasted his trial, his appeals, and two decades of searching.
She was found listing heavily in the South Pacific five weeks after departure — waterlogged, stripped of equipment, her 25 passengers and crew gone without a trace from a vessel designed to be unsinkable.
A veteran Palermo crime reporter vanished from outside his own apartment in 1970 while investigating the suspicious death of Italy's most powerful industrialist — his body has never been found.
On the night of August 21, 1986, a volcanic lake in the Cameroonian highlands exhaled a silent cloud of gas that killed 1,746 people in their sleep — and the trigger has never been definitively identified.
Lebanon's most powerful leftist leader was shot dead in his car on a mountain road in 1977, and everyone knew who ordered it — but the geopolitics of the region ensured the killers would never be named.
A university student disappeared from a crowded Chilean nightclub in 1999 — when his skeletal remains surfaced five years later on a riverbank, the discovery raised more questions than it answered.
Göran Lundblad launched his boat on a frozen Swedish lake in March 1994 and was never seen again — but the evidence on the ice suggested he did not go alone.
A brilliant GCHQ mathematician on secondment to MI6 was found decomposing inside a padlocked North Face duffel bag in his bathtub — and nobody reported him missing for over a week.
She left for her evening jog along the Asuwa River in Fukui City and never came home — her body found weeks later in mountain undergrowth, the case never solved.
The ANC's chief representative in France was shot dead outside her Paris office in 1988 — no suspect was ever charged, and the arms deals she was investigating remain classified.