This film is about a mathematics professor and a graduate student trying to solve murders that are connected by a mysterious code series.
"The Oxford Murders" spends too much time elaborating and dragging on the relationships between Martin, Arthur Seldom, Beth and Lorna. It gives me the impression that the filmmakers ran out of ideas on riddles and puzzles, hence made up a series of love and jealousy scenes to fill up the screen time. As a result, the first 70 minutes of the film mistakenly focuses on the poorly built love entanglements, which is rather plain and boring.
The next 20 minutes starts to be interesting as the riddle is full on, but it is too hard to follow. Only the ending twist captivated me, but that lasts for 5 minutes only.
If the riddles can be more evenly spaced and better presented, "The Oxford Murders" could have been a great mystery film. It could have been captivating as a simplified version of "Da Vinci Code".

The story begins when an American student discovers the lifeless body of his landlady, a woman who in her youth had been part of the team that cracked the Enigma code in World War II. Shortly thereafter, a professor of logic at Oxford receives a note warning that this is the first in a series of murders. Thus, the student and teacher together decide to investigate the case, using mathematical codes to find the pattern that follows this mass murderer. It is based on the book "Oxford Murders by Guillermo Martinez

The story has major gaps and forced and improbable situations, with a clumsy police and puzzles in the style of the television series "Batman" of the years 60.

Elijah Wood and Leonor Watling boast some interpretations rather limited, especially in contrast to John Hurt, to overreact even achieved quite acceptable performance.

The film is interesting firstly because it is well told, by Alex de la Iglesia showing once again be a big movie buff (notice the magnificent sequence shot above the discovery of the first body) and, especially, because the film deals with issues related to philosophy and mathematics very interesting, giving it a very important value to the story.

The golden ratio, chaos theory, the Tractatus Logicus Filosoficus Ludwig Wittgenstein, coding theory, numerical series, fractal geometry, Fermat's conjecture and its proof by Andrew Wiles in Cambridge, the Uncertainty Principle Heisenberg, the Liar Paradox, the Gödel Incompleteness Theorem ... Anyone familiar with these concepts, you will love the film. Is very noticeable that the author knows what he speaks.