Excuse me, Constable. Have you seen my husband? No, Madam Detective, I haven't...Hmmmm, very mysterious.

Excuse me, Watson. I think you missed that clue.

  

The hound of the Baskervilles. Not so scary now, are you.

Jack has a think about the latest case.

And writes important notes in his case book. Ah ha! Mystery solved! We are at 221B Baker St, the home of the famous detective - Sherlock Holmes.