Professor T.

Season 2, Episode 13: Swan Song, Part 2

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While the team is closing in on drug lord Mark Desmedt, John discovers that Chief Inspector Rabet and Serge are both working with the criminal. Professor T asks Annelies to assist him with his research in determining the exact profile of a murderer. He wants to find out whether Flamant will be capable of murder when she finds out that her new boyfriend is not what he appears to be.