As a work of mystery, Between Knives and Secrets is one of those films about which the less you know the better. However, whoever expects to see a typical plot in the style Agatha Christie you will end up being surprised by something very different from expectations. In fact, only the starting point (a clear homage) resembles the writer's books. And this is great.
It all starts when the famous and millionaire writer Harlan Thrombey (Christopher Plummer) is found dead inside his property by his private nurse Marta (Ana de Armas), under circumstances of apparent suicide. But of course, nothing is as it seems.
To solve the mystery, the police hire the consultancy services of the famous private detective Benoit Blanc (Daniel Craig). From there we have an engaging plot, full of twists and with an impeccable cast. Most members of the Thrombey family had some disagreement with the patriarch at his last birthday party; which makes them automatically suspicious. But one of the highlights of the film is just playing and sometimes subverting these and other clichés. Perhaps only a few purposeful mannerisms bother the most demanding, but it is far from compromising the whole.
Also noteworthy are the beautiful photography and the soundtrack. The plot, although set in the present day, develops almost entirely in the classic style of the writer - another elegant reference to Agatha Christie. The songs, in addition to being well crafted, fit perfectly, often (and again) running away from clichés.
The cast is a separate show. The experienced Christopher Plummer is the perfect foundation, both as a living character and in flashbacks. Ana de Armas, masterfully balancing drama and humor, brings us such a human protagonist that it is impossible not to sympathize. The always spectacular Jamie Lee Curtis and Tony Collette (respectively, the writer's daughter and daughter-in-law) make quite convincing characters who in other hands could become caricatures. Chris Evans, like the playboy grandson, is the type we love to hate. And even Daniel Graig surprises with scenes of relief with me.
The film also features well-punctuated social reviews. Marta is the daughter of Puerto Rican immigrants, a fact that is used to illustrate the xenophobia of a large part of the American people. In the Thrombey family there is an anti-social teenager, addicted to the Internet and sympathizer with neo-Nazism.
Finally, the title of the film mentions the writer's huge collection of knives located in his office.