Jason Robertson gave the Dallas Stars the lead in the second period, assisted by Joe Pavelski and Miro Heiskanen.
That position lasted until 13 seconds into the very last minute of the match.
Then team captain Ryan O'Reilly equalized for the home team and they suddenly smelled morning air.
It only took 18 seconds from technical in St. Louis had the puck in the net again.
Jordan Kyrou's input took on the Finnish Dallas hill Jani Hakanpää's skate and went into goal.
The unlikely turn was a fact and Hakanpää looked cracked when he went to the booth.
Dallas got to taste their own medicine when they beat the Pittsburgh Penguins yesterday after what was then thought to be a late turn.
Compared to St Louis ditto, however, they took their time.
With the loss, a four-game winning streak for Dallas was broken.
St. Louis has scored in twelve straight home games.
CLIP: Steen scored the first NHL goal (5/1)
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Stock Photography: Jake DeBrusk, in the middle, is flanked by Oskar Steen (62) on the left and Erik Haula.
Photo: Bildbyrån