From Nice to Kyoto, Geneva to Vladivostok, Captain Larcher tracks a murderer: an aikido master who leaves haikus at the scenes of his crimes.

A young cop who loves operas and motorcycles finds himself partnered up with a world-weary traveler who thinks he's seen it all. Their case? A series of unusual killings perpetrated by a master of Japanese swordsmanship... who leaves haikus behind as his signature. The height of refinement, really -- suhc impeccable taste! The adventure kicks off on the sunny French Rivier, but will take Raphaël from Geneva to Vladivostok to Kyoto on the trail of an aikido master who might not be such a stranger after all...