As day gave way to night on a cold October evening in 1971, Una Lynskey stepped off a bus on the Fairyhouse Road in County Meath.

The 19-year-old was returning home from her job as a civil servant in Dublin.

Una lived at the end of a quiet cul-de-sac about halfway down Porterstown Lane, a 2.5km country road on the outskirts of Ratoath.

The walk would usually take her no more than 15 minutes but on that dark and damp evening, Una never made it home.

What happened next caused deep and long-lasting division in an otherwise tight-knit community – and the impacts are still being felt over 50 years later.

It pitted neighbour against neighbour, ruined families and destroyed friendships.

At a time when heavy-handed interrogation was often still viewed as a legitimate investigative tool, three young men found themselves on the wrong side of the law.

They had done no wrong and they hoped the truth would set them free – but would it?

Season 3 of Inside The Crime is a story of divided loyalties, misplaced vengeance and an act of cruel injustice.

At the heart of it all, however, is the unsolved murder of a 19-year-old girl.

This is the story of the Una Lynskey Murder.

Throughout the season, you can go Deeper Inside the Crime with interactive maps, family trees and in-depth articles examining the key points from the story.

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