Evil One Day, Evil The Next

A girl named Thorn was thrown into the life of an assassin at age 7. When her brother Viper is captured she ventures into the castle. But she wasn't careful and she gets caught. The king and prince are in the room when she escapes her cell and helps her brother. They could easily kill her but they have been waiting for Thorn for years. Will they risk what they need in a state of panic? Why have they been waiting for Thorn? Only the royal family knows and its time for their tangled web of secrets to be put out into the open, for all the subjects to see.