Telly Review: The Disappearance of Mary Boyle is a hard but necessary watch

"New evidence has been uncovered down the years, but the Gardaí are still waiting for someone to help them solve the puzzle of Mary Boyle, and give the family some closure."

Donegal schoolgirl Mary Boyle who disappeared without trace in March 1977. Pic: Eoin McGarvey

Charlie Boyle’s hair went grey overnight, when his 6-year-old daughter Mary disappeared in rural Donegal in 1977, on a visit to her grandparents. 

She remains missing today, with no clear idea of what happened to her.