Tarrant's direct superior at British intelligence. Upon learning of the kidnapping, Harper authorizes a surveillance operation to identify the kidnappers but quickly suspects Tarrant of orchestrating the crisis. He plants incriminating evidence against Tarrant, refuses to authorize the ransom on government policy grounds, and eventually hands Tarrant over to French authorities before being outmaneuvered.
Harper is Tarrant's direct MI6 superior, overseeing his undercover arms-smuggling operation.
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