Private detective Finn Zehender has settled into his new home in the village of Aschberg in northern Germany. Even the two village police officers are no longer his rivals, and can almost be considered friends. While shooting for fun, one of the officers, Gerd Mühlfellner, hits a carrier pigeon, killing it. Attached to its foot is a letter with a plea for help from a kidnapped man. Finn joins Officer Mühlfellner and his partner Anna Wippermann on a visit the local small animal breeders’ club, which has a large aviary for carrier pigeons. To everyone’s surprise, the police is already there in the form of Inspector Christiane Garde from Hamburg...
