Episode: 1 The Invisible Thief Episode: 2 The Evil Knight Episode: 3 An Empty Cage At Wimbledon Stadium Episode: 4 The Treasure Of The Catacombs Episode: 5 The Secret Of The Templars Episode: 6 Project Hippocampus Episode: 7 The Octopus Trap Episode: 8 The Serval Of The Thames Episode: 9 The Invincible Adversary Episode: 10 The Diamond Gnome Episode: 11 The Attack Of The Giant Ant Episode: 12 The Return Of Warragul Episode: 13 The Vengeance Of The Werewolf Episode: 14 The Forgotten Threat Episode: 15 The Secret Horde Episode: 16 The Lexington Vampire Episode: 17 The Haunted Aviary Episode: 18 The Mystery Of Lexington Alley Episode: 19 The Elusive Robin Of The Animals Episode: 20 The Riddle Maker Episode: 21 The Nibbler Episode: 22 The Master Of Lightning Episode: 23 The Gorgon Of Regent's Park Episode: 24 The Phantom Of Linford Street Episode: 25 The Spy Of Buckingham Episode: 26 The Cause