sentences:  Wallace sends Gromit to return Piella's forgotten purse.At Piella's mansion, Gromit discovers numbered mannequins representing each of the murdered bakers, and a book of photos – each one of Piella with the murdered bakers some time before their deaths; Wallace is her planned thirteenth victim, completing a baker's dozen.When he shows Wallace the evidence, Wallace is too distracted with his engagement to Piella to listen and Piella, having learnt that Gromit is onto her, manages to throw it into the house's fireplace.