Mandy Morton’s books certainly give one paws for thought. This is the 13th in the series of her murder mysteries where all the characters are cats. She will speak and sign copies of her latest book, The Suspicions of Mr Whisker at Waterstones in Cambridge on Wednesday, May 8. She will be in conversation with celebrated crime author Nicola Upson. Morton’s first book, over 10 years ago, The No 2 Feline Detective Agency was written to raise money for the cat’s rescue charity, the Blue Cross.