London’s most famous detective’s most comic mission has Holmes and Watson guarding the top secret McNish-McNosh Plans, while Mrs Hudson needs a big chopper to slaughter Nigel the Turkey, Captain James Riddle loses a cargo of brandy, Lord Ned of Neddinton the society necrophile is making a nuisance of himself, Will has been arrested for a murder and a rather suspicious nun arrives on the scene claiming to be Holmes’s neice!