Foyle investigates a mysterious disease affecting local farm animals and looks into the stabbing of a war hero.



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Episode cast overview, first billed only:
Peter Sandys-Clarke ...
Mark Wilcox
Ben Meyjes ...
Simon Higgins
Philip Franks ...
Captain George Halliday
Jay Simpson ...
Caroline Martin ...
Tom Harper ...
Leonard Cartwright
Roy Marsden ...
Ted Cartwright
Brian Jones
Gawn Grainger ...
DCS David Fielding
Martin Ashford
Tom Jenkins


August 1942: A truck drops a sheep while driving through farmland. Nearby animals start dying, then a farmer's daughter, and Sam falls ill. Then cows fall sick and mysteriously disappear. Foyle's inquiries lead him to work on biological warfare and the search for a cure for Sam, as her illness looks terminal. Meanwhile, Sgt. Milner investigates the murder of a war hero by a conscientious objector, who happens to be the brother of a past love of his. Written by N. R. Badnell

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Crime | Drama | Mystery | War





Release Date:

22 January 2006 (UK)  »

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Did You Know?


The sinking of Convoy PQ17 in July 1942 was the inspiration for "Bad Blood." Of the 37 ships that began the journey from Iceland to Russia, only 11 got through. The rest were sunk by the German navy. 153 merchant marines were lost. See more »


The drug used to save Sam is streptomycin, referred to as a brand new, scarcely available treatment. Streptomycin wasn't actually discovered until October 1943, over a year later than the date given for the events in this episode. It wasn't used medically until after the war. The only drug available in 1942 to treat anthrax was penicillin, and there were only a handful of doses in the world at that time. See more »


[first lines]
Mark Wilcox: Simon?
Simon Higgins: Good morning, Mark.
Mark Wilcox: How are you?
Simon Higgins: Just missed the quack. No change I'm afraid.
Mark Wilcox: But you are going to be all right?
Simon Higgins: Apart from being blind, you mean?
Mark Wilcox: You shouldn't have done it.
Simon Higgins: Oh, it's only temporary, Mark; I'll be fine. What about the new test?
Mark Wilcox: We're going ahead now.
See more »


References Saboteur (1942) See more »

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User Reviews

The Worst Kind of Warfare
19 September 2016 | by (United States) – See all my reviews

It's hard to be critical of the military when they are fighting a horrible enemy like Hitler, but here we see the testing of germs as weapons. The story starts out with a planned explosion releasing smoke which, wind borne, moves toward a group of stanchioned farm animals. The problem now is that a sheep is found dying and is brought to a farm and something begins to infest the other animals on the farm. We find out later that these guys are using anthrax spores without realizing the overall effects of their use (think back to those activities in our own country a few years ago when germs were being sent through the mail). There is a second plot as well. A second concern is the death of a woman from anthrax when the doctors can't diagnose it. Sam, who has visited the farm in question, becomes infected herself. This is a very gripping episode which brings forth all kind of questions.

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