A murder in Paris’ Louvre Museum and cryptic clues in some of Leonardo da Vinci’s most famous paintings lead to the discovery of a religious mystery. For 2,000 years a…

With nuclear war looming, a military expert in underwater acoustics strives to prove things aren’t as they seem—or sound—using only his ears.

A police brigade works in the dangerous northern neighborhoods of Marseille, where the level of crime is higher than anywhere else in France.