Killing Mockingbirds

Simba, Crown Prince of the Pridelands, falls for the beautiful Nala, an innocent but rather unfortunate cub. However, in the wake of a tragic event and the loss of her friend, everything changes; the throne is taken by a dark and mysterious lion, and Nala suffers alone... until she realizes that the darkness in her life is simply part of a cycle she cannot control. AU, Dark!Mufasa.