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Where Is George Gibney?

Mark explains why this feed is now called Cover.

A message from Mark Horgan on a new investigative series launching next week.

• 1 min

Stakeknife

Introducing... Stakeknife

A man tasked with finding and killing alleged IRA informers was a British Agent all along

• 2 mins

Stakeknife

1. The Man Who Never Was

A man denies he’s Stakeknife to the press but a forgotten tape comes back to haunt him.

• 36 mins

Stakeknife

2. Sin É

Mark speaks to the brother of one of the first people interrogated by Stakeknife.

• 48 mins

Stakeknife

3. The FRU

Mark meets two former members of the secret army intelligence unit that ran Stakeknife.

• 49 mins