By Dennis Drabelle, Special to The Washington Post Two years ago, in his Glasgow Trilogy, Malcolm Mackay plunged readers into the world of hit men employed by a Scottish mob, where paranoia is a way of life. A lad can’t be too careful to make sure he’s not being tailed, to scout out the best escape route from any building he enters, and to keep his eye on the line between a job going well and a job going too well to be credible.