Very silly of him not to have noticed the weapon under the wicker chair.
"I'm not likely to get two in one night," Bella tells the neighbor's hedge. "I'm going to turn in. See you around."
Charlie is expected home late on this day, and she doesn't want to be out after sundown without the ability to summon the cavalry, so sunset sees her still indoors.
Naturally, it sees Sherlock indoors also. But not for long. He heads for Bella's house as soon as stepping outside will not cause him to catch fire.
There is a bit of a kerfluffle there.
It involves no fewer than four species of demon, although not particularly numerous contingents of any, and they are all of the sort that humans may rationalize into believing conspecifics.
And it involves some cops.
He assesses the situation. Yes, that's Bella's father. Yes, that's one of Bella's father's subordinates about to be disemboweled.
Bella would probably not be pleased.
Sherlock enters the fight.
No one involved is expecting him, which means that he can dance across the field of engagement and kill six demons before anyone notices he is there. He makes another pass before anyone starts shooting at him; he makes a third without getting hit. One cluster of demons decides that discretion is the better part of not having your neck broken by the whirlwind of death; they flee. Sherlock stands still for a moment, his coat dripping four colours of blood, baring human teeth at the remainder.
"Stand down!" orders one of Charlie's subordinates. Another is checking for pulses. Charlie himself is radioing for backup, but he's got his sidearm trained on Sherlock.
Sherlock makes a gentle shooing motion at them.
They break and run.
He laughs.
Charlie doesn't ask. He shoots.
He turns to Charlie and sweeps an extravagant bow with no sign of pain.
Then he bolts down the nearest alley.
Bella, oblivious, is reading in her room.
A small pebble strikes her window with pinpoint accuracy, nowhere near hard enough to break it.
"But soft, what light through yonder window breaks?" he calls up to her through his giggles. "It is the east, and Juliet is the sun! Arise, fair sun, and kill the envious moon who is already sick and pale with grief that thou her maid art far more fair than she."
At that point, he is laughing too hard to stand; he sits down in the grass, leaning back on his hands.
Bella opens the window. "Are you drunk as well as injured?" she asks him.
"No," he says cheerfully. "But you are clearly an oracle. You'll never guess what just happened."
"...Did Charlie shoot you?" she asks, exasperated. "Why was he in a position to shoot you?"
"Well, I'd just killed about two dozen demons in front of him, so I imagine he wasn't too sure what to do with me. Under the circumstances, 'shoot it' was a reasonable option. Ruined my favourite coat, though, remind me to pretend to be angry about that."
"My favourite coat has a great big fucking hole in it," he says, gesturing indicatively. "And my shoulder is none too happy either, but unlike the coat, the shoulder will repair itself. I invite you to apply to your father for explanations of what he was doing facing down twenty-six assorted hellspawn with four cops and a corpse. Police business, I imagine. I ran across them on my way here."
"In perfect health, last I saw him," says Sherlock. "As I was fleeing down an alley."