Has anyone amazing ever taken on the role of Sherlock Holmes? Let's just think about this for a second. Well, there's... Benedict Cumberbatch, Peter Cushing, Jeremy Brett, Robert Downey Jnr, Basil Rathbone and Tom Baker to name but a handful. However, there's one name amongst these actors which truly stands out as a superstar. That's right, Roland Rat even tried his hand at the role in Tales of the Rodent Sherlock Holmes. What's in Sherlock's Casebook? Dr Watson (Kevin the Gerbil) keeps a nice diary of all his cases with Sherlock Holmes (Roland Rat), but it's not just packed with stories about hounds and studies in pink. No, sir! In fact, there's a whole range of cases which only get the briefest of mentions. However, these adventures see our favourite Baker Street duo taking on such startling cases as chasing a dastardly canary trainers, investigating a mysterious, empty box and even trailing the fiendish Blue Carbuncle! Popping up along the way to thwart Holmes and Watson are a selection of British TV treasures including Mollie Sugden, Barbara Windsor, Rodney Bewes and Christopher Ryan.