They’re killings, serial killings! We’ve got a serial killer on our hands. I love those, there’s always something to look forward to.

More from Sherlock

• Bravery is by far the kindest word for stupidity, don’t you think?
• You’re under stress right now and your hand is perfectly steady. You’re not haunted by the war, Dr. Watson. You miss it.
• Look at you lot, you’re all so vacant. Is it nice not being me? It must be so relaxing.
• Oh what now? I’m in shock! Look, I’ve got a blanket.
• Try not to start a war before I get home – you know what it does to the traffic.