Lisa McInerney likes the rule of three. Three novels set in Cork structured around sex, drugs and rock’n’roll and, within that, ‘smoke, coke and yokes [ecstasy], St Paddy’s modern trinity’. The Rules of Revelation follows her debut, The Glorious Heresies (winner of the 2016 Women’s Prize; in its focus on the relationship between teenagers Ryan and Karine, it represents the sex component) and its sequel, The Blood Miracles (drugs, 2017).