Advised not to draw attention to themselves Greg and Sally approached the back entrance to 221 Baker Street, having first made sure that they weren't being followed.
Mrs Hudson had left the back gate unlocked, and as they slipped through they bolted it behind them, making sure that no one else could enter without climbing the wall.
"Mr Lestrade, Miss Donovan, how lovely to see you again." Mrs Hudson was waiting in the kitchen for them, and she rose from the table where she had been ordering food online on her new laptop ("John and Sherlock insisted, those boys know how to look after me!") and greeted them both with a motherly peck on the cheek.
"How are you Mrs H?" Greg grinned as he extricated himself from her embrace.
"Oh, mustn't grumble. My hip doesn't like this damp weather, but this is England after all." She waved them through to the living room. "Now, you make yourselves comfy while I put the kettle on, and finish this order."
"Would you rather we went to get the shopping for you?" Sally asked.
"No thank you dear, John said you were to avoid being seen here if possible."
"Why does that not sound good?" Greg sighed, sinking into the sofa.
"Because," Sally responded drily "He's about to fling London back into bloodshed?"