The cinema is a factory of illusions that shows a dream life, where the scenarios are spectacular, the people attractive and the feelings pure. To raise those dreams, film studios at the same time take care of grandiosity and details: actors with studied costumes and make-up; fable scenarios; intense dialogues; great and seductive music ... Although often overlooked mathematical aspects to which it seems that neither writers, producers, or directors pay much attention, but that, as in real life, are stubbornly there.

In this work several misadventures are presented, almost all with a solution, in this relationship between cinema and mathematics. They will walk through its pages between the cinema of catastrophes, unfortunate uses of mathematics in film and television scripts, adversities, miseries and unhappiness of the protagonists caused by mathematics or with solutions thanks to them ... To exercise that look, we will rely on properties and concepts such as, among others: similarity, progressions, functions, limits, fractals, logarithms, equations, prime numbers, infinite series, trigonometry ... No one fears them! They are with us, some for more than two thousand years, to help us look better, understand more acutely and act more effectively. They are on our side.

José María Sorando Muzás
Professor of Mathematics in Secondary. Great popularizer, he has given more than a hundred lectures, in Spain, Andorra, Chile and Morocco, has made several exhibitions and has published more than 80 articles. He is author of the book 100 scenes of cinema and television for the class of Mathematics (2014), Mathematical Adventures in the cinema (2015) and Cinema and mathematics: Resolving problems (2016). 2010 Santillana Prize with the collection of stories Hunting Dragons. For ten years he has been responsible for the Cinemateca de Suma section, the mathematical magazine with the largest circulation in the Spanish language. For fourteen years she has been developing the website "Mathematics in your world" (matematicasentumundo.es), whose relevance in Spain and Latin America continues to grow.