What does an alcoholic look like? That is the question at the root of Nancy Harris’s The Dry, the tyrannically tragic, black comedy tracking every move of Shiv (Róisín Gallagher), a 35-year-old artist returning to Dublin from years spent in London, making a series of poor decisions in order to cloud the hypersensitivity she battles with daily. First aired by Britbox in the UK and from March 1 on RTÉ One and the RTÉ Player, The Dry, centres around the five members of the Sheridan family, caustic and unforgiving all the while boasting a familiarity that resembles home, as they…