Although the sheer intensity of the premise is a little exhausting, this is a tightly plotted conundrum of a movie which allows its audience barely a moment to catch breath.

Cho fares surprisingly well as the story pushes into themes of guilt, revenge and forgiveness, finding a resolution that is both unexpected and poignant.

Taut, fast-moving and intelligent, it's an entertaining film which benefits from its short running time, something which sets it apart from most other Korean thrillers of late

"A Day" is a very entertaining film, which manages to overcome its melodramatic elements by presenting a unique take on the "Groundhog Day" and through impressive production values.