Sherlock gets his first call from Bella's father asking for interpretation of a Pokémon the following morning. Charlie is on the line, but a Geodude can be heard muttering to itself in the background.
"I see," he murmurs. For Charlie's sake, he translates, "She says he was taller than her trainer, and wearing a long brown leather coat with white stitching and a black hat with a large floppy brim and a red ribbon around it." And to the Geodude, "Anything else?"
"I had the most fascinating call from your father just now. He wanted me to interview a Geodude named Tiffany about some vandalism she witnessed, and during the conversation she made reference to having been defeated by a Shaymin before she was traded to her current owner."
"Are there any Pokémon who can read? Zag can recognize a handful of whole words - I can tell him to find a Pokémon center and he can do it even if the building is shaped funny, based on the sign - but not letters or anything. I'm not sure if that's just for lack of trying." They are approaching Charlie's house, now.
They do! Sherlock can probably tell by the available food, even if he couldn't guess from knowing Bella, that Charlie does not eat particularly inspired meals when his daughter isn't around, and that she is around sometimes but not for long or regularly. Nonetheless, Bella collects pasta fixings. "Not really enough room in here for cooperative cooking, do you want to or shall I?"
Presently they are at the police station, which is circled overhead by a Noctowl; it ignores them. Bella hops off Branch, puts him away, and heads inside.
Up the exterior stairs is apartment five. Bella puts Branch away and climbs and walks right in, revealing a pigtailed girl with two Pokéballs who says, "Hi?"
"Hi. I'm Bella Swanna, and this," she gestures at the presumably following Sherlock, "is my friend Sherlock, and we think his Ditto can get the paint off of Tiffany."
"Oh, that's great, she's been so embarrassed," says Tiffany's trainer.
"He really can," says Bella.
"Mycroft, meet Tiffany. She has had an unfortunate encounter with a spray can."
"To," says Mycroft, with dignity. He wobbles up to Tiffany and slurps on the streak of paint.
The paint cleans away easily. Mycroft turns its exact shade of blue. "Ditditdit," he giggles, wobbling back to Sherlock.