Strictly fans were furious, as Debbie McGee was given her lowest score so far after being accused of breaking the rules.
One of the series favourites already, Paul Daniels’ widow danced a quickstep with her professional partner Giovanni Pernice.
Part of movie week, the routine to Let’s Call The Whole Thing Off was from the film Shall We Dance.
The magician’s assistant and her young partner put on a great performance and were expecting great scores once again.
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But judge Craig Revel Horwood said he was going to mark the 58-year-old down for breaking “the ten second rule”.
It seemed to be news to most of us watching, but Craig went on to explain that in the middle of a ballroom routine, a dancer cannot spend more than ten seconds out of hold from their partner.
Debbie looked dismayed, as Craig said he would be taking marks off their score as a result.
And when the scores came in, it was indeed Debbie and Giovanni’s lowest score so far.
Craig awarded them just a six, Shirley gave them a seven, and both Darcey and Bruno awarded them an eight.
Giovanni, who had choreographed the routine, looked distraught at the news.
But who could only go along with Craig’s verdict, saying “Rules are rules.”
And fans were fuming on their behalf, with many of them tweeting that in years of watching the show, they’d never heard of the “ten second rule” before.
One said: “I’ve watched #Strictly since it started. When has this 10 second rule EVER come about????!!! Brilliant dance again, Debbie!!”
Another added: “A ’10 second rule’…. First time I’ve ever heard any of the judges mention it in #Strictly. Thought they were overly harsh to Debbie.”
It meant that the couple found themselves much further down the leaderboard than they have been so far, with five other couples above them.
It was Aston and Janette at the top with a score of 35 for their amazing cha cha cha to “Can’t Stop The Feeling” from the Trolls movie.
They were followed by Alexandra and Gorka who won 33 for their American Smooth from My Fair Lady.
And at the other end of the leaderboard was the Reverend Richard – who had performed a mind-boggling paso doble to Flash Gordon.
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The Strictly results show is on BBC1 tomorrow at 7.15pm.