Fumbling for her mobile Kallie punched in John's number, getting the voicemail before remembering the doctor's phone wasn't working. With a flick of her thumb she scrolled through to find the number of his flatmate.

At the first ring Sherlock sat bolt upright in bed, tumbling the good doctor sideways. Reaching for his phone with one hand he laid the other reassuringly on the shoulder of his bed-mate.

"Hello?"

"Mr Holmes? It's Kallie. Is John there?"

John heard her worried tones and sat up, running a hand through his hair and wincing at the stiffness in his limbs.

"Put her on speaker."

Sherlock pressed the button.

"What's up Kallie?"

"It's Sammy, he was checking out a row of derelicts that Barrymore owned."

"What's happened, has he been hurt?"

"No, but I think he might be in trouble. Just after he went into one of the houses a policeman went in." She paused for a moment, then added "I've seen him before, but I can't think where."

"Was he on foot?" Sherlock asked

"No, he came in a car."

"Get the number plate, then keep an eye on them."

Kallie reeled off the number, finishing the call and putting her phone away.

"What do you plan to do?" John asked as Sherlock tapped in a number.

"Mycroft can check registration numbers."

"Brilliant!"