Hide N' Seek, Then Suffer.

When Blaires parents are killed by an awful gang, her and her siblings go to live with their Auntie - only to be found again by the same gang a few years later. Blaires sister is then abducted and they don't see her again, until one day the gang returns for Blaire and her brother and all secrets are revealed.
Letters by mum, A man called Al, gang member Carlos. It will all add up to their huge escape plan.