Since I am a Sherlock Holmes fan, "The Barker Street Regulars" is one of my favorites in Susan Conant's series of dog lover's mysteries. Holly Winter and her Alaskan malamute Rowdy, who has qualified as a therapy dog, visit the Gateway nursing home, where they meet a 90-year-old woman, Althea, and her friends, Robert and Hugh, all of whom are Sherlockians. Althea's sister, Ceci, is being conned by a woman who calls herself an "animal communicator" and who claims to be channeling messages from Ceci's dear departed Newfoundland, Lord Saint Simon. Then Ceci and Althea's grandnephew, Jonathan, is found murdered in Ceci's back yard. Holly and her Sherlockian friends set out to discover whodunit. In addition to the usual dog lore, this book is chock-full of references and allusions to the Sherlock Holmes Canon: Ceci lives on a gaslit street on Norwood Hill; the tall, evil man whom Holly thwarts in his attempt to drown a cat has a "bulbous forehead"; an obnoxious couple on the dog-show circuit are named Gloria and Scott. (Holmesians will notice one gaffe: Take a look at Holly's account of the plot of "The Copper Beeches" in Chapter 26. Oh well, she has admitted that she's no expert.) If you enjoy a good, humorous cozy mystery, and if you are a dog lover and/or a Sherlock Holmes devotee, you're likely to find this book lots of fun.