An angry Boris Johnson has had to interrupt a visit to New York and is returning to Commons facing resignations for his illegal suspension from parliament.
Before leaving the United Nations General Assembly, he was forced to telephone the queen about his humiliating defeat at the Supreme Court, although it is not yet known if he apologized to her.
Johnson and his allies are said to be livid with the judges.
What's next for Boris Johnson?
The pro-Brexit Daily Mail reports that during a stormy cabinet teleconference, Commons leader Jacob Rees-Mogg accused the judges of organizing a "constitutional coup".
And Mail quotes a prime minister ally saying, "The effect of this is to ask the question: who runs this country? Are the courts saying they want to run the country now? It will be very interesting to see what the public makes of it."
The strongly pro-Remain Financial Times, however, condemns Johnson in a scathing editorial column and urges him to withdraw.
The Commons session, confirms a short order statement, will not include routine business such as departmental questions or PMQs. But the day is still full of dangers for the prime minister.
"There will be room for urgent questions, ministerial statements and requests for emergency debates," said Commons chairman John Bercow.
Opposition lawmakers involved in the lawsuit that ended the victory in the Supreme Court are predicting a busy schedule as they try to heighten the heat of Johnson and senior ministers.
"Generally speaking, we should not specifically say in advance what we are asking an urgent question for," SNP Justice spokeswoman Joanna Cherry QC told Sky News.
"But I would be very surprised if there were no urgent questions about the nature of the legal advice that was given to Boris Johnson on the extension of parliament.
Supreme Court decision "was not the right decision"
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"And in addition to questions about Brexit, there will also be questions about the collapse of Thomas Cook and Liz Truss's illegal activity in breaking the law against arms sales in Saudi Arabia."
Rees-Mogg, who traveled to Balmoral to propose an extension to the queen last month, will be questioned by lawmakers as he makes a statement about the Commons business.
The Opposition also wants to challenge Attorney General Geoffrey Cox about his legal advice – leaked to Sky News – that the extension was lawful.
"I think the lawyer will have to consider his position," Brexit Secretary Sir Keir Starmer told Sky News.
"Because we now had a unanimous decision in the Supreme Court completely differently, indicating that the Prime Minister acted illegally.
"At the very least, I think the attorney general needs to make a statement to parliament."
Despite demanding the resignation of the prime minister in his speech at the labor conference, Jeremy Corbyn has frustrated leaders of other opposition parties with his reluctance so far to put forward a motion of no confidence in the government.
Labor officials argue, however, that the numbers do not yet exist to win a vote of confidence, because the 21 dismissed rebel parliamentarians said they were not prepared to vote for the Labor Party.
MPs hope to get back to work
The Financial Times states in its editorial that any prime minister with a "shred of respect" for British democracy and office responsibilities would resign.
He said overtime was always a "high-stakes gamble" and "galvanized" lawmakers to use the time they had to bind the prime minister's hands to legislation to prevent non-agreement – and cost him a majority.
"Now that decision leaves a blur in his character and competence. Faced with such a damning judgment, any premier with a shred of respect for British democracy and the responsibilities of his office would resign.
"Mr. Johnson has indicated that he intends to continue. He will try to suppress this setback as he has previous episodes that have raised questions about his suitability for the position.
"The recalled parliament must not have a truck with this behavior and must approve a vote of confidence in the prime minister. It must use its right to form an interim government that can guarantee an extension of the Brexit date on October 31 and organize a general election ". "
He concludes: "The judges have spoken. Now the people must have their opinion. This is how Britain's constitutional democracy works."