The Bill Series 20 Episode 61 Desperation

Gina leads the enquiry into the disappearance of Sam's daughter Abigail, but Sam manages to force her way onto the case, and concerned she may have been abducted.
Honey and Steve are first on scene as a teenager causes criminal damage then has a seizure, discovering he has overdosed on dangerous ecstasy tablets, so Debbie and Gary hunt the dealers.