The Ties That Bind Us (1) Casualty : Season 19 Episode 1

Two frantic parents have lost their children and fears that they have left the hospital while visiting their sick great-grandfather. They have been captured on CCTV outside the hospital, but haven't been seen since. A stricken rape victim is brought in, tied with copper wire. Dad knocks on the flats around their home, and comes across a convicted pedophile, who looks shifty. Meanwhile, police have found a bloodied hood, belonging to the girl.