I was happy to spend time with an engaging protagonist as she tried to discover whether the two murders were deliberate or unfortunate mistakes. The ending is satisfying as is the revelation of the way the stories are framed. The prose is confident and assured. If you enjoy cozy mysteries then this is definitely for you. Historical Novel Society Review. CHILL WITH A BOOK Premier Readers’ Award a. The third Jan Christopher Cosy MysteryWas murder deliberate - or a tragic mistake?January 1972. The Christmas and New Year holiday is over and it is time to go back to work. Newly engaged to Detective Sergeant Lawrence Walker library assistant Jan Christopher is eager to show everyone her diamond ring and goes off on her scheduled round to deliver library books to the housebound – some of whom she likes; some she doesn’t.. She encounters a cat in a cupboard drinks several cups of tea... and loses her ring.When two murders are committed can Jan help her policeman uncle DCI Toby Christopher and her fiancé Laurie discover whether murder was a deliberate deed – or a tragic mistake?