Lord Of The Shadows is book 11 in The Saga of Darren Shan, by the author Darren Shan.

Darren travels back to his home town with Cirque Du Freak, plagued with the knowledge that no matter who wins the War of the Scars, either he or Steve will become the Lord of Shadows. He explores his town, marveling over changes until he finds his old home — shocked it hasn’t changed. Informed by a gossiper, Darren learns that his parents have moved and his little sister, Annie, has a son out of wedlock.
Over the course of the book, he encounters Debbie and Alice as they attempt to recruit vampirites to fight with the vampires, like the vampets, The Vampirites are mainly homeless people). In this book Darren encounters his sister, Annie, who believes he is dead, Steve and his henchmen, Vampet Morgan James, Gannen Harst, and R.V., as well as Steve’s son, Darius, (who tries to kill him several times) and his old friend Tommy Jones, who is now a professional soccer player (R.V. later kills him in front of thousands of people.) Steve and his gang raid the Cirque while Mr. Tall and the others are speaking. Steve kidnaps Shancus, and Morgan kills Mr. Tall with a gun. Mr. Tiny and Evanna come to see Mr. Tall, and a startling revelation is made-Evanna and Mr. Tall are brother and sister, therefore making Mr.Tiny Mr.Tall’s father. Darren talks with Evanna and realises that no matter what happens, the harsh future that he and Harkat saw, will eventually come true. That if he did succeed in killing Steve, then he would end up turning evil and killing Vancha and all other vampires who stood in his way. The gang follow Steve to the old abandoned theatre where it all began. Morgan James and Darius battles Darren and Harkat, and Harkat kills Morgan James. They meet up with Steve, who says that he is Darren’s blood brother, in a way. After the brutal killing of Evra’s son Shancus, Darren prepares to surrender himself to destiny and kill Darius, but has second thoughts after a shocking revelation: Annie is Darius’s mother, making Darius Darren’s nephew.