A horror story in three words: London property market. That’s the starting point for Roisin Lanigan’s brilliantly creepy debut novel, set in the sheer hell of being a young renter. Because once you’ve run the gamut of carbon monoxide-leaking boilers, coked-up estate agents, absentee landlords and frosty housemates (and been gouged in rental costs for the privilege), maybe a haunting isn’t a deal-breaker.