An excerpt from the potterlock novel Sherlock Holmes and Seventh Safeguard: Chapter 1 ~ The Strange case of Miss Amelia Bones.
“…. I broke off as his gaze suddenly flashed to the door. A pair of teenagers had just come in together, a girl and a boy. Besides the slightly odd fact that the girl was wearing a lovely lavender party dress while the boy was in worn jeans and a rumpled orange sweatshirt, I could see nothing about them to warrant interest. But I could see that Sherlock, though pretending to play with his phone, was really watching them very closely. They took a booth near the door, and sat there, looking a bit uncomfortable. They were speaking to each other, but in whispers I could not pick up.
“What is it?” I asked my companion.
“They’re fugitives.” he said beneath his breath, still playing with the phone.
“How do you make that out?”
“Look at them. They’ve just come from a formal event. Look at her clothes and hair. But they left in a hurry. He was wearing dress clothes too, but changed out of them quickly. He pulled on the clothes he’s wearing now fast and carelessly. But he’s still wearing his dress shoes. They were at the event together then, but he changed. Why? Not for practicality’s sake. If that had been the case she’d have taken off those heels. Perhaps because his clothes would stand out more than hers. … Long robes, for instance.” He gave me a look, as if wondering whether I got something. Then I remembered he had described Ms. Bones’ assailants as wearing long cloaks or robes. “They are clearly nervous, perhaps they expect to be followed. The young lady keeps looking over her shoulder at the door. So, they left a party in a great hurry, were worried they would stand out, fear attack … and don’t know what to do next. You can see from their manner that they are uncertain.”
“Maybe it’s just a bad date?”
“No. That wouldn’t explain him changing his outfit. And hers is too formal for that. And they aren’t nervous about each other. Look at the way she’s leaning across the table towards him, it’s almost conspiratorial, they’re very used to each other. They can’t be out of school yet, or at least he can’t. But they aren’t related, at least not closely. … First of all there’s their appearance, absolutely no family resemblance. Then there’s their clothes. Her things appear new. Not his.”
“Well, hers are formal wear.”
“Yes, but he’s still wearing his formal shoes. Did you notice the soles? Almost worn through. A boy that age doesn’t usually fit a pair of dress shoes long enough to wear them through. They’re hand-me-downs then, or second-hand. Her family has to be at least solidly middle-class. His is short on money. These school children are not close relatives then, but still very familiar. School friends then. And what might we deduce about their companion?”
“Companion?” I asked, trying to keep my voice down in my surprise. “Sherlock, there’s only two of them.””