Sherlock: “Sentiment is a chemical defect found in the losing side.”Tonight’s episode was without doubt the most enjoyable ninety minutes of television I’ve seen in years. It took everything that worked about season one, turned the humour up to eleven, added some extra sauce (which caused ructions in the morning press), and chucked in a plot so complex, it would have left even Einstein scratching his head. Seeing the two greatest (albeit fictional) minds of the Western world jousting for intellectual superiority, was like watching Odysseus and Athena do battle. Who won? It’s hard to say—especially when the game may still be afoot.