Help me find this crime drama!

[Ishacoco]

I'm ill and pregnant at the moment and I just want to snuggle on the sofa with something to watch!

This drama I vaguely remember is a UK one where the perpetrator turns out to be a member of the police investigative team. I think it's based on a true story, but not sure.

It's a bit like Manhunt from memory.

I have googled and googled and gone through the 'more like this option' on the tv but I cannot find it! It's not Above Suspicion or Line Of Duty or an episodic one like Shetland or Vera.

I'd be so grateful if someone has any clue what it could be!

Messiah? But that’s not based on a true story

How many years old are you talking?

Within the last 5-10 definitely.

No, not that one. Thanks anyway!

Line of duty was the only one that came to mind.
Have also tried to Google and come up with nothing helpful.

Line of Duty

Between the lines?

No, neither of those, but thank you!

It's driving me mad!

Cracker?

No offence?

Even if it’s not. Highly recommend it. It’s fucking brill

No Offence, I reckon. Not quite a member of the investigative team but close enough that you could remember it as such!

Bloodlands?

Wasn't there a programme like 24 hours in police custody or something like that where it turned out one of the policeman on the case was responsible?

@Blondeshavemorefun - this is your area of expertise!

Informer?

Didn't 'Happy Valley' (series 2?) have a story line like that?

There was a storyline in Cracker (I think the second/third series) where the villain was one of the Police team.

It is a personal bugbear of mine that EVERY SINGLE episodic whodunnit runs this storyline at some point (or at least accuse the detective/team). It’s such lazy writing. Sorry, not much help, but i sympathise with how hard it must be to find one individual.

Dexter. He was the forensics guy.

Criminal UK had something like this happen

Is it Safe on Netflix ?

The Tunnel? Unfotgotten?I have a vague idea that might have been part of the storyline in both of those but not 100% sure

It may not be Criminal UK but I just wanted to say that series is really well worth watching. They are stand alone episodes.

"This drama I vaguely remember is a UK one where the perpetrator turns out to be a member of the police investigative team. I think it's based on a true story, but not sure."

What was the crime - murder? terrorism? kidnap?