Hidden is a Welsh television drama serial, created by Mark Andrew and Ed Talfan. It was initially broadcast in Welsh on the Welsh-language channel S4C under its Welsh name Craith. The bilingual version of the series, under the English name Hidden, was broadcast on BBC One Wales and BBC Four. The Welsh-language versions of the first two series aired on S4C in 2018 and 2019, respectively, with the third and final series beginning on 10 October 2021. The English-language version of the third and final series aired in April 2022.

Plot

A body of a woman is found in the woods who is later identified as Mali Pryce, a troubled girl who went missing in 2011. Detective Inspector Cadi Jones and Owen Vaughan are leading the investigation. Injury marks on the body indicate that Mali had been held shackled by her abductor for all these years. Cadi finds evidence implying that Mali may not have been the only victim held by the abductor. Meanwhile Dylan Harris, a labourer is seen mistreated and beaten by his mother Iona.