Death in the Family: An Arkham Tale

Book One in the Death in the Family series.
The four sons of Batman are put to the test when the Dark Knight is found dead along with his wife Catwoman, and the rest of the batfamily is no where in sight. To make matters worse the person behind their father figure's death commands them to complete the mission alone or their loved ones will receive the same fate as Batman. It is up to Nightwing, Red Hood, Red Robin, and Robin to work together as their past comes to light.