Following the investigation set up by security consultant Kevin Halligen, this one-off documentary features exclusive interviews with ex-MI5 undercover operatives, the FBI and ex-military personnel.
Based on unprecedented access, this one-hour film tells the story of security consultant Kevin Halligen and Operation Omega, the secret investigation to find missing child Madeleine McCann in 2008.
Producer/Director: Adrian Gatton
Associate Producer: Mark Olden
Editor: Mark Senior
Executive Producer: Jacqui Wilson
Channel 5, broadcast on 4 June, 2014
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