As WW2 rages around the world, DCS Foyle fights his own war on the home-front as he investigates crimes on the south coast of England. Later series sees the retired detective working as an MI5 agent operating in the aftermath of the war.

Samantha Stewart: [to Foyle and Milner] What you both need is a jolly good murder!
[Andrew has joined his father on a fishing trip]
Andrew Foyle: I can't see the attraction of standing ankle deep in mud, trying to catch a fish too stupid to come any where near us.
DCS Christopher Foyle: Don't underestimate the intellegence of the average trout, and besides, they can hear you from forty feet away, so please try and keep quiet!
DCS Christopher Foyle: The uniform suits you.
Andrew Foyle: Thanks. I wish I could say the same about your dressing gown!