The strange look on his face isn't intentional, but as he listens it occurs to Viatorus that this young woman might not be as good as solving mysteries as her friend. He smiles gently and puts on his consultant face.

"Let's sit down for a minute." He beckons for her to follow him to a table where he sits down and waits for her to get settled before he turns to her, hands clasped together. "We should make a timeline. Like a story. We know that at the end we want to find Sherlock, but we have to fill in the bits in between. So, we'll start at the start. What happened last time you saw him?"