Time for my second Person Who Interests Me:
Samantha Stewart is 21, the daughter of a vicar (and neice of several more plus one Bishop!). She joins the MTC (although she'd hoped to join the WAAF) at the outbreak of the war, feeling glad of the chance to escape her rather dull and dutiful life at home. Since she knows the South Downs very well, she's assigned to Foyle when AC Summers puts in a request to the MTC for a driver for Foyle.
She has a love of murder mysteries (especially Edgar Wallace) and instantly wants to know all about Foyle's work - what cases he's working on (a spy-ring, or a nice grisly murder!). He is shocked to have been assigned a young woman (a pretty young woman at that!) and appalled that Sam wants to know all about his work, but over the course of the first case that she's driving for him, he gradually thaws, and then grows to accept her involvement. When Foyle goes to meet a man who's been running a racket to ensure people's call up papers go missing, she decks him with a dustbin lid as he's running away from Foyle. Their exchange aferwards thoroughly amuses me:
Foyle: Sam?
Sam (anxiously): Yes, sir?
Foyle (smoothing down his tie): Thank you.
Sam smirks.
(Sorry about the blurry nature of the topmost pic - it was hard to catch it and cap it!)
By the middle of the episode (The German Woman), Foyle is praising Sam for lifting the keys out of a dead man's pockets (really, Foyle?!), and it's not long before she's volunteering to go undercover to discover who's been siphoning off petrol at a fuel Depot (Among the Few), or doing sleuthing on her own account while Foyle's being given the run-around by SOE (The French Drop).
She gets nearly blown up three times, is involved in a car accident, and develops Anthrax, but through her 5 years driving for Foyle (and afterwards), she remains loyal, dependable, immensely brave, very cheerful, and very level-headed.
The thing I love about Sam is how she's allowed to be useful and smart and practical (and attractive to men!) in an otherwise male-dominated arena. And while Foyle occasionally tries to protect her, he never ever condescends to her.