After Sherlock finally took up the missing person case, new evidence was found, and arriving at the crime scene, Mycroft saw a new figure next to his younger brother.

Squinting, the man leaned on his umbrella, watching the approaching people. Recognizing the face, he had to swallow and straighten up, adjusting his collar.

— Good afternoon. Hello to you too, Sherlock.

He bowed slightly to you, and cast a sharp glance at his younger brother.