At first they were in a small dark corridor, no lights. There were three doors. Two on their right hand side and one directly ahead.
"That'll be the main room," he spoke in a whisper, pointing at the door immediately ahead of them. "The factory or warehouse or whatever it is. These two...one will be some kind of office or reception. The other, the garage lock up. Most probably this first one."
Sherlock reached out and took hold of the door handle. He was just about to turn it when his text alert sounded, loud and echoey, giving him quite a fright. He jumped and, with a grin, took it out of his pocket to check the message. He read it through then turned the phone round for John to see. It was sent by Hopkins and read:
Large red van just arrived. Driving up your way.