Harry Potter and the Prisoner of Azkaban is the latest movie to be sent up by Cinema Sins.
The third instalment in the fantasy movie series, based on the novel by JK Rowling, is awarded 70 'sins' for plot holes and coincidences.
These include characters frequently holding 'secret' conversations in places where they can easily be overheard, teachers being irritatingly vague and withholding vital information and Hogwarts's apparent lack of regard for student safety.
One of the main problems highlighted in the rapid-fire video is the time-travel sequence at the climax of the film. Its many inaccuracies are humorously pointed out, with the entire plot ultimately being labelled a paradox.
Cinema Sins has previously mocked a number of blockbuster movies, including last year's Man of Steel and the previous Harry Potter film, The Chamber of Secrets.
Rowling confirmed last month that a stage play based on her Harry Potter books will soon be going into development in the West End.
Reporter & Sub-Editor, Digital Spy Susannah is a freelance writer and sub-editor, specialising in the entertainment industry. She graduated in 2014, with a BA in English and American Literature and Creative Writing, and an MA in Creative Producing. She’s been writing for Digital Spy ever since, after first getting involved through work experience, and has written hundreds of stories for the site on a range of topics, from The Sims to Doctor Who. Susannah has also written for Reveal Magazine. Her special interests are soaps (her Mastermind subject would be 2000s Coronation Street), Marvel and Star Wars. She can also quote far too many lines from Friends and Brooklyn Nine-Nine.
