Writer/director Park Chan-wook says he made his latest film, this smart and challenging murder mystery, expressly for adults. More in the manner of a classic film noir than the taboo-breaking, neo-noir thrillers he is known for, Decision to Leave has fun twisting familiar tropes into something unexpected. A detective investigating a remote murder, a mysterious widow and the obsessive cat-and-mouse game the two play is only the starting point in this longer view of obsession and grief.