Hetty is called in to investigate when one by one, the contestants in the Blainthorp Muiscal Festival lose their voices. The sponsor of the festival, Oliver Hardiman wants the mystery solved but Hetty only has five days.She finds herself caught up in a battle between rival pharmacists who may be using their skills to harm the finalists.
Quest roles:
Matthew Scurfield(Oliver Hardiman), Margot Leicester(Annie Mosscrop), Tyler Butterworth(Freddy Slater), Gordon Wharmby(Albert Slater), Alan David(Bill Jason), Angela Richards(Glenda Jason), John Middleton(Simon Letby), Michelle Butterly(Rita Locheed), Rod Arthur(Les Maynard)