Ruby And Nessa - Ghost Hunters Series by Gillian Larkin

A short ghost story. Ruby Laurel is a ghost hunter. She locates ghosts who are haunting places – or people. In this first story, Ruby is called upon to investigate a haunting in a supermarket. She soon discovers the ghost of a young woman called Mary Jackson. How is Mary connected to the supermarket? And why is she haunting it? Ruby’s investigation is made more difficult by the arrival of her troublesome younger sister, Nessa. Will Nessa help, or hinder, the investigation?