Put it just before the reversal in an edit, then follow the turn with a Vine Boom to underline the change of direction. For a second version, open with Dun Dun Dun, let the warning land, and finish with the Vine Boom once the person is heading the other way.
O tym dźwięku
This very short effect lasts under a second and delivers its turn-back idea in one quick hit, with no build-up and nothing to wait through. It feels abrupt and urgent, like a warning flashed at exactly the wrong moment, and it works because the message lands before anyone has time to overthink it.