Clyde staged a late smash-and-grab 2-1 victory to leave Queen's Park stunned in the opening league encounter at Hampden.
The match appeared to be ebbing towards a narrow home victory until Anthony Quinn upended Scott Ferguson in the box and Ross McKinnon converted the resultant penalty.
And there was less than one minute remaining when substitute Michael Daly headed home the winner from David Sinclair's cross.
It had taken until just short of the hour mark for the match to spark into life, the Spiders' Darren Miller directing the opener in expertly from an acute angle.
The home side remained on the front foot and Vincent Berry shot over the bar when well placed.
They were left to rue their misfortune too as Clyde's clinical raid late on secured all three points.