Article 13199 of the Pan-European Constitution:
"No person shall be prejudiced from employment in any capacity, at any level, by reason of age, race, creed or incompitence."
In a united Europe of the near future, incompetence is not an option, it's compulsory. You can't be fired for being bad at your job. But the rules don't apply to the psychopath who's leaving a trail of corpses across the continent. He's very competent indeed.
And so, down these mean, incredibly badly sign-posted streets, one detective must thread his way through a maze of blind nightclub bouncers, octogenarian male bunny girls and airline pilots with vertigo.
In search of a killer. In search of the truth. In search of a decent plumber.