Oriol Paulo can write a story, that's for sure. Writing this kind of puzzle requires a vivid imagination.
Well-acted and marvelously written, Paulo's Contratiempo gives the similar exciting, intriguing couple hour experience that for example Timecrimes and Wild Tales gave. Not a moment of boredom or dullness. It might resemble The Girl on the Train. But it's smart. And Spanish. And infinitely better.