Mary Nelson is a fictional character portrayed by Fiona Button in the TV series Foyle's War.
In the first episode they appeared in, titled Sunflower (season 7), they were 26 years old.
They appear in 1 episodes out of a total of 28 aired
Episodes1
Sunflower
episode S7.E3 september 2013Foyle is drawn into the bizarre murder of an ex-Nazi defector and leading expert on Soviet intelligence who had been working for MI5.