Dramatic irony occurs when the audience or reader knows something that the characters do not. It creates a sense of suspense or humor because we can foresee the outcome, while the characters are clueless. Full definition
Few films are simultaneously hilarious and harrowing, and even fewer rely on dramatic irony for both effects. (pastemagazine.com)
The original film turned suspense levels to 11 by playing with dramatic irony, showing the audience the location of the three strangers far more often than the characters are aware of it. (thecriticalcritics.com)
From his very first film, the director has written and edited his films with some pieces out of order, creating dramatic irony, shock value, heightened drama and more. (slashfilm.com)