Meet Conrad. You've never met a cat like him before. Neither has Lulu Lewis when he walks into her life one summer's day. Mourning the recent death of her husband, the former police detective had expected a gentle retirement, quietly enjoying life on her new canal boat, The Lark, and visiting her mother-in-law Emily in a nearby care home. But when Emily dies suddenly in suspicious circumstances, Lulu senses foul play and resolves to find out what really happened. And a remarkable cat named Conrad will be with her every step of the way . . .