BBC Cymru crime drama starring Sian Reese-Williams as a police detective investigating the disappearance of a young girl and the subsequent investigation when her body is found in a lake. The Welsh language version of the first series was broadcast on S4C, with the English version broadcast on BBC One Cymru and BBC Four. There have been two series, with a third scheduled for 2021. Winner of a BAFTA Cymru Award and nominated for another four, as well as nominated for an RTS Award.