Sherlock: The Hounds of Baskerville, BBC One: five talking points They started with Sherlock's nicotine-sniffing sequence, which resembled nothing if not Lecter's love of fava beans and a nice chianti. Then there was the scene where Sherlock searched for a password among the Major's books. Among the biographies of Margaret Thatcher was a tome about the great Carthiginian military commander: Hannibal. Was there a dual meaning here? Finally, there was Sherlock's memory palace, a technique which Holmes shares with Thomas Harris's cannibal murderer. Screenwriter Mark Gatiss openly suggested in his script that Holmes may have Asperger's, but was he also implying that Holmes is a fully fledged psychopath? Scooby Doo, where are you? Did the dog jokes go a little too far? The gag about apparent Morse code clues that led Watson up to a "dogging" site was very funny, but had Gatiss run a little far with his "gigantic hound" references? Did anyone else think that the missing line from the scene in which the mad professor removed his gas mask at the end might have been, "I'd have got away with it as well if it hadn't been for those pesky kids"? Was the plot stolen from Batman Begins? The 2005 film saw The Scarecrow introduce a toxic hallucinogen - which drove people insane by causing them to imagine their worst fear - into Gotham City. Too close for comfort? Why did the dog have to die? Kept all alone on the moor and subjected to the mad scientist's experimental toxin, the black dog seemed remarkably restrained in the circumstances. The poor thing. Why did it have to be shot?