Kilmarnock were dealt a sickening blow in the 94th minute as a victory against Hearts was ripped from their grasp.
Chris Stokes and Kyle Lafferty had fired the Ayrshire side into a 2-0 lead, but a Stephen Humphrys gave the Jambos life before Nathaniel Atkinson smashed home an effort four minutes into stoppage-time.
It was a crushing blow to Derek McInnes' side who would have fired themselves within three points of fifth with a victory.
