Deadliest Assassin

Red is a ruthless killer, a master at hiding what she is thinking and feeling.
Sasha is a shy, timid like created that is hated by her entire pack.
What do this two very different people have in common?

They are the very same person, read to find out how a shy and timid girl like Sasha became Red the deadliest and most skilled assassin know to the world of the shifters