Richard and Jane Elkinson are having their annual Christmas party. Only trouble is stockbroker Richard's been made redundant and, as the night wears on, the guests are becoming less tactful
Armitage runs a chemical company that is on the verge of producing a gas that causes temporary disability. Clearly the military want it but it is also sought by a group of Japanese. Both Armitage and Madam Greenfly hire different people in the same detective agency to guard the gas and steal it respectively... confusion, double crosses and hilarity ensue...
The TARDIS materialises in Paris in the year 1572 and the Doctor decides to visit the famous apothecary Charles Preslin. Steven, meanwhile, is befriended by a group of Huguenots from the household of the Protestant Admiral de Coligny. Having rescued a young serving girl, Anne Chaplet, from some pursuing guards, the Huguenots gain their first inkling of a heinous plan being hatched at the command of the Catholic Queen Mother, Catherine de Medici.
