Updated Wreckers Synopsis

Dawn and David are visited by Nick, David’s brother, a soldier on ‘R&R’ from Afghanistan. Dawn is a comfort to Nick, who has episodes of sleepwalking and nightmares. David is angered by their easy manner with each other – more angry than seems necessary to the situation. Dawn tries to discover what is the secret that binds David and Nick together… but she is a flawed detective…

Which of them all is the guilty party?

Source

It seems like Claire’s character’s name is Dawn.