{Sherlock S3 Spoilers}.{Inspired by the title of the final episode}. Sherlock made his first and last vow. But can be keep it. A ruthless villain back in the game, with only revenge on their mind can Sherlock protect the 3 or will he let john down. ••• I DO NOT OWN ANY OF THE CHARACTERS USED HERE IN THIS STORY. {Book cover by COEYKUHN.TUMBLR.COM}