Keith Fleming, Mary Gapinski and Brian Vernel in The Long Drop, © Tommy Ga-Ken Wan One thing’s for sure: nobody who sees The Long Drop in Glasgow will find it easy to imagine it being staged in any other city. It’s a show in Glasgow, of Glasgow, about Glasgow, and that’s a huge part of its appeal. In many ways, the city is the most important character in this true crime drama, adapted by Linda McLean from the novel by Denise Mina, a pair of Glasgwegian girls themselves.