Sherlock sighed. He really didn't wish to be in this situation. If anybody saved him, he was sure to tell them to not tell anybody else. Sherlock didn't want people knowing that he needed help. He was Sherlock Holmes he never needed help.
He was sure the simple act of helping him would ruin his reputation. He didn't want people thinking he had lost it.
The detective was quite sure that he would never need help again.
All Moriarty did was send a photo. He wasn't going to make it that simple. He wanted to make this a game. He did often make a game out of things, There was no way that he was making this too easy, That wasn't fun for him.
"Who did you message?" Sherlock looked at him. He knew Moriarty wanted to make a game out of this. 
So the detective was going to be sure that Moriarty didn't win.
Letting the madman win was dangerous. He knew Moriarty probably had some big plan and alot more crimes to commit. He was getting bored of being tied up. Sherlock wanted to just get back to what ever case there was planned for him. He wondered if Moriarty was behind any of it.

(its fine)