"Who was that?" Sherlock asked as they crossed the pavement to the hospital entrance, his voice low.

"An old friend of mine, Greg Lestrade." John shook his head, anticipating another question. "Don't ask more now, not in here, I'll tell you more later."

Side by side they walked the corridors, heading in silence towards the small office where Dr Mike Stamford prepared his lectures.

With the briefest knock at the door Sherlock pushed it open, ushering John in ahead of him.

"John? John Watson?" Mike sounded shocked. He took a step forward then realised that someone else had stepped through the door. "Sherlock? What's going on? What have you done to your hair?"

"Hello Mike." John smiled in the direction of the voice

"Mike. I need my notes and samples."

"John, what happened to you? Why are you two together."

"Same old Mike, questioning everything." John chuckled. "Safer if you don't ask this time though mate, Sherlock and I fell foul of a local gang leader."

Mike's eyes widened.

"Oh God," he groaned, his voice a whisper. "Barrymore. Okay, let me get your stuff."

Mike dug the book and samples out of a store cupboard, watching as they stowed them in various pockets.

As they prepared to leave he said. "John, Sherlock, remember; come to me if you need a bolthole."