Deadwater Fell comes to BBC First next week.
This four part series sees David Tennant star as a doctor whose wife and three young children are murdered in a fire.
When a seemingly perfect and happy family is murdered by someone they know and trust, the small Scottish community they call home becomes riven with mistrust and suspicion as those closest to the family begin to question everything they thought they knew about their friends. Deadwater Fell examines in unflinching detail the nature of female friendship and the harmful, entrenched gender stereotypes and conformity that can lead to the most devastating consequences. Laying bare the fragility of trust and the corrosive nature of lies, the series demonstrates that even the closest of friends all have their secrets.
Thursdays at 8.30pm from March 12 on BBC First.
Update BBC First has advised that Deepwater Fell will now screen Thursdays at 8.30pm from March 19 on BBC First.