Criminals in the German city of Cologne appear to have lifted a plan straight out of a Sherlock Holmes story when they robbed a jewellery shop by tunnelling in from underneath. The proprietor of the store in the city’s Londoner Platz, were astonished when he opened up on Monday morning to find a gaping hole inside his display case, and €100,000 of diamond jewellery missing. Police discovered that the robbers had tunnelled their way into the display case from the basement below, drilling their way through the reinforced concrete floor. The shop’s name, Goldfinger, may be reminiscent of the James...