John Wilson woke one night to find a rat tied to the front door of his home.

His mind raced. At 4am someone had journeyed far, to this quietest of quiet country lanes in Cavan to hand deliver a dark message.

The symbol was striking and shocking but not totally unexpected - John Wilson is a Garda Whistleblower; a sort of Irish Edward Snowden: he accessed the computer system to expose a culture of 'ticket-fixing'.

Speaking-out against widespread penalty point terminations made his career untenable, pitched him against the Garda Commissioner, the Minister for Justice, former colleagues and one-time friends.

Produced by Robert Mulhern with Ronan Kelly

First Broadcast 18th January 2014

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