John gets pissed at Umbrella Man. Mycroft, you certainly are a fearsome presence.
Hostility
"There's no need to be so hostile," responded Umbrella Man with a smile. He hadn't actually answered Sherlock's question (irking John considerably). When Umbrella Man's powder blue eyes turned to him with a familiar yet not fully recognizable expression, John stepped backward, only to make contact with a chest. A hand was suddenly on his shoulder— Sherlock steadying him.
"Mike," Sherlock said suddenly. John's eyes narrowed. "Cornered him, did you? Stole his key."
John flared as Umbrella Man pulled out a familiar brass key from his suit pocket. "You did!" He stepped forward but Sherlock's hand tightened on his shoulder.
Prompt was #97: brass
Poor Mike! Nah, jk, he's fine, just pissed that he lost his work key. (It dropped from his pocket and Mycroft snagged it...but he isn't saying anything.) Oh, and Mike isn't fat right now, he's actually pretty lanky...he gains weight later in life, haha.