In 2008, a secret British organization was created to defend Britain and her people. A team named the 'Knights' were created to defend their country. On April 2nd 2012, a bank was robbed by a man named 'Warlock'. Not much is known on him apart from he speaks multiple languages. For a whole year, there was no sighting of 'Warlock' in Britain. Until now... Spy! Merlin Cast

To those who know, there's only two Holmes siblings, Sherlock and Mycroft. Secretly, there was a third brother, Merlin Holmes, the youngest of the Holmes siblings. Hidden away from the world for his own protection, and trained to be a spy/agent for the British Government under the watchful eyes of Mycroft. Now his mission is to 'Babysit' Sherlock and John(in secret)Spy!MerlinHolmes