When ever there was a case, it was very rare that Sherlock wouldn't show up. He liked cases and normally got very bored if he didn't have one. Even if he wasn't wanted there, he was likely to show up. It didn't seem to matter if he was tired and hadn't had any sleep. The detective was up early and ready for a case.
Which was no different then this morning. He was up and ready for the case. Sherlock didn't even bother with breakfast. He knew John would nag him to eat. But he was mostly one to ingore that advice .

"John I have a case, you can come , otherwise I'm going now." Sherlock replied. He grabbed his scarf and headed towards the door. He narrowed his eyes as if waiting for John to tell him off for not eating breakfast.
"Sherlock you have to eat something," John said nagging him. He had his arms crossed. He wasn't going to pity Sherlock if he collasped from exhaustion or was dizzy from not eating. He knew Sherlock was always more interested in cases.
"Eating will just slow me down and I am in a hurry," He excliamed. He didn't want to miss out of too much. He wasn't expecting anybody else to be there. As it turned out John had stuff to do and wasn't coming with him.

Sherlock headed out and called a cab. He was getting fustrated waiting for the cab to come. He told the cab driver the address and he got in. He seemed to be thinking, Sherlock never seemed to thank the cab driver either. When he arrived at the crime scene he got out and looked around. He was tired but he seemed far too alert for somebody who was tired. Though it normally came back to get him later.
He snapped at some cops to get out of the way because he had work to do. He seemed to just treat them like idoits as usaul.

He looked at Maxine and narrowed his eyes "What are you doing here? This is my case." Well he had assumed that wether Lestrade ever called him or not.