Narrative complexity is a trend in contemporary cinema. Since the late 1990s there has been a palpable increase in complex storytelling in movies. But how and why do complex movies create perplexity and confusion? How do we engage with these challenges? And what makes complex stories so attractive? By blending film studies, narrative theory and cognitive sciences, Kiss and Willemsen look into the relation between complex storytelling and the mind. Analysing the effects that different complex narratives have on viewers, the book addresses how films like Donnie Darko, Mulholland Drive or Primer strategically create complexity and confusion, and, by using the specific category of the 'impossible puzzle film', it examines movies that use baffling paradoxes, impossible loops, and unresolved ambiguities in their stories and storytelling. By looking at how these films play on our mind's blind spots, this innovative book explains their viewing effects in terms of the mental state of cognitive dissonance that they evoke.