Several months ago I watched the TV series Why Didn’t They Ask Evans, based on an Agatha Christie novel. I really enjoyed the relationship between the young couple who were solving the mystery, and wondered if Christie had written any more about them. She had not — Why Didn’t They Ask Evans is a stand-alone novel — but looking into that led me to the series she did write about a detective couple: the “Tommy and Tuppence” mysteries, beginning with The Secret Adversary in 1922, and ending with Postern of Fate in 1973, three years before Christie’s death. Though Christie wrote only five books about them, they predate Miss Marple, and their last adventure was Christie’s last novel.
At their best — i.e., in the first three of these books — Tommy Beresford and his (eventual) wife Prudence (better known as Tuppence) are a much lighter version of my favourite fictional detectives, Lord Peter Wimsey and Harriet Vane. They appear in the early 1920s as childhood friends who are now veterans of the First World War — Tommy having served overseas and Tuppence in the VAD. Both are having a hard time finding work and making a living in postwar London, and decide to start a detective agency. They are immediately caught up in mysterious events well beyond their understanding, but their quick wits and courage allow them to triumph. In Partners in Crime they solve a series of mysteries in short-story form while also being engaged in a larger investigation; in N or M? they are a middle-aged married couple whose children are both involved in the war effort during the Second World War; Tommy and Tuppence feel sidelined by their age until they are drawn into intelligence work in an effort to unmask a German spy.
The mysteries themselves are pretty light, even flimsy in places, but the banter and affection between the two main characters is a lot of fun, and I really like how Tommy sees Tuppence as fully his equal throughout, even when other people underestimate her as the female partner of the pair. She is always a step ahead and it’s hard to get anything past her. N or M? was by far my favourite of the five books, with the tightest and most interesting plot, and the best character development of the series.
I love the fact that Christie returned to this couple over the decades and that the characters, unlike Miss Marple or Hercule Poirot, aged in real time and were impacted by real-world events as the decades passed. However, I did find that the two later books, By the Pricking of My Thumbs and Postern of Fate, which were written when both the writer and her characters were senior citizens, were by far the weakest. This didn’t have to be the case — there’s no reason you couldn’t have elderly people who are still sharp and curious solving current and interesting mysteries. (See the Thursday Murder Club books for an example of this being very well done). However, both plots revolve around Tuppence getting intrigued by something mysterious that happened years or decades ago — one involving a house in a painting she is given, and one triggered by notes in a book she finds in the new house she and Tommy are moving into — and neither of them feels particularly interesting or compelling. The last book, particularly, is very rambling and discursive, with too much dialogue for the amount of plot movement that actually happens, but given that Christie was elderly herself at this point her powers as a novelist may not have been at their peak.
Still, I like Tommy and Tuppence and I’m glad to have read the whole series.