Episode 20 sees Josh and Scott tackle four further stories from The Case-Book and creep closer to the conclusion of their exhaustive labour of love. First up is "The Mazarin Stone", whose dramatic, adapted features are more than evident than its supposed creativity (ooh, burn!). "The Three Gables" sees Holmes and Watson investigating a strange property proposal and a foreign "lady of favour", whose appetite for love leaves something to be desired. Next up, cover your neck and grab your garlic! Bowman and the BFG take on "The Sussex Vampire" before considering the obscurities and familiarities of "The Three Garridebs".