Corinna is being upstaged by Best Fresh Bread, a new bread shop just down the street from her own bakery. Meanwhile, her gorgeous lover Daniel has an old friend, George, staying with him. Georgiana Hope is tall, blonde, gorgeous and up to something. Even more disturbing for the reluctant investigator is the strange outbreak of madness which seems to be centered around her end of Melbourne.

Trick or Treat is the fourth installment in the Corinna Chapman series, and is filled with trademark devilish humour, scintillating suspense, engrossing characters and a sprinkle of magic.