KasperL’s review published on Letterboxd:
Never have I been so attentive and challenged during a first viewing. Pieces to the puzzle are there in plain sight and only one is missing, the one also unattainable by the protagonists, leaving some wiggle room for further hypotheses. Given that the field of possibilities in a time travel movie is so immense, Carruth's most impressive accomplishment is actually that the meticulousness of his astonishingly complex narrative allows for a very precise reconstruction of "prior" events. Pure genius.