Marc Kilgour is a fictional character from the Henderson's Boys series of books by Robert Muchamore.
He was found by Charles Henderson and helped him to foil Nazi Germany's planned invasion of Great Britain.
His mother was never located, so he spent his life up to the age of 12 at an all-boys orphanage run by the Catholic Church in Beauvais.
A friendly teacher taught him German as a child, which helped him during Eagle Day, and he picks up English very quickly.
Charles Henderson finds Marc in his house and, with Paul and Rosie Clarke, sets out for the port so they can return to England.
The story ends on a cliff-hanger with the news that the Cardiff Bay, the boat on which Paul and Rosie were sailing, has been sunk.
[2] At the beginning of the book, Marc has an operation to remove the fragmented root of the tooth that was pulled out by the Gestapo at a dentist in London.
This brings him to the attention of an Admiral, who gives Marc a present and offers to help the struggling unit secure a spot on a training exercise.
He manages to get through the interrogation and is chosen to return to France along with five other recruits Joel, Rosie, Paul, PT and Troy.
During this mission, Marc works alongside Henderson in Madame Mercier's most expensive and well-established bar as a cigarette boy.