Author note (Introduction)

When Beckett and Castle are called to a murder scene, they aren't expecting what they find - or rather, who they find.
With the murderer skulking in the shadows and just waiting to finish the job, the survivor in his sights, Beckett has to deal with a case that strikes close to her heart.
And all the while, time is running out...

An AU where Beckett has an older brother. Set around series 4. Includes OC's.