Hilary Mantel 
Beyond Black 

Alison Hart is a medium by trade. But her ability to communicate with spirits is a torment rather than a gift. Behind her plump, smiling and bland public persona is a desperate woman. Her days and nights are haunted by the men she knew in her childhood, the thugs and petty criminals who preyed upon her hopeless, addled mother, Emmie. And the more she tries to be rid of them, the stronger and nastier they become.