"Your change is £4, have a great day and come back soon." The blonde cashier smiled up at Sherlock as he ripped off his receipt and handed it back with his change.
Their fingers brushed as he reached for his change and Sherlock knew that it was no coincidence.
Outside while waiting for a cab to hail he looked down at what he had already deduced would be there. Written in a neat scrawl the word 'John W.' accompanied by ten digits. He usually ignored when people tried to flirt with him but he wanted to make this an exception.