Gemma O’Doherty released this ten minute trailer for a documentary written and directed by herself about the case of Ireland’s youngest missing person Mary Boyle. It was published yesterday.

Mary Boyle disappeared from her grandparents’ farm in Donegal in 1977. Gemma O’Doherty has been rather dogged in standing up for the family’s investigation.

It’s quite harrowing and if the allegations of political interference stand up, then this is huge.

It’s incredibly chilling viewing.