Old refurbished theatre, the Beryl, is re-opening. Days before opening night, the ghost light – left on at night to appease the ghosts of actors – is extinguished. Alice digs into the Beryl's past, sleuthing in a network of dark back-stage corridors and cobwebby storage rooms. Gradually, she starts to uncover the hundred-year-old secret of the theatre: a stolen diamond. Is the Beryl haunted by a ghost – or a living thief? The sequel to the critically acclaimed Alice Jones: The Impossible Clue – a perfect middle-grade detective story for fans of Robin Stevens or Trenton Lee Stewart's Mysterious Benedict Society.