Murder Investigation Team - "Moving Targets" (2003)
Murder Investigation Team was a spin-off from The Bill.
The first episode was a cross-over featuring the investigation into the gunning down of Sgt. Matt Boyden. Nick Klein, by now in re-hab, was interviewed about his involvement with his dealer, Dexter Barnes and his dealer's girlfriend, Amy Boyden.
Amy was Matt's somewhat Satanic daughter, and had featured in The Bill a few years previously. On meeting her at his dealer's flat, Nick thought she looked familiar, but couldn't place her. She had lead him into using crack-cocaine.