Tuesday is the big day about prorogation.
The Supreme Court hears the case of Cherry and Miller against the government.
This could test the constitution and the union. The Supreme Court sits as both as a Scottish Court and and English Court and applies Scottish / English law accordingly. And there are differences. It is possible that prorogation might only be illegal under one or the other but would have effect on parliament. Or its possible that the Supreme Court might decide to uphold the government position.
What is encouraging is the constitutional expert blogs which suggest that they lean to the court intervening. It's important that for the A50 case the Supreme Court referenced the arguments in these blogs.
But let's not get too carried away.
As it is Joe Moor, former director of legislative affairs at 10 Downing Street wrote in today's Telegraph that Johnson could merely prorogue again from Oct 14 "until at least Nov 6" thus preventing parliamentary scrutiny of no deal which would help enable in effect illegally. The Times also reported Cummings as having said this to advisors.
This has been dismissed by legal experts, but the point remains there is a willingness to both frustrate parliament and be as obstructive as possible in the days leading up to 31st.
There is also the 'Nobile Officium' Court action designed to stop illegal no deal by allowing the courts to write a letter to the EU to request an extension of Johnson refuses to.
It remains to be seen if it has even a chance of success.
The British press has been full of comments of optimism for a deal this weekend. This is after there was positive noises in a similar vein from Brussels. These has since been largely dismissed as mere political will with no practical progress. The British optimism has also been dismissed as mere posturing. And Priti Patel "misspoke" when she appeared to suggest that no deal was no policy this morning.
Other rumours include the French willing to grant a 2year extension but not a 3month one out of fear this will happen repeatedly. The French are now pushing for a deal and relaxing their approach as such (but Germany won't compromise the single market and Ireland the GFA so its all talk).
And do not forget, for all the talk of a deal there are certain time restrains.
Apparently Nikki da Costa has a timetable to get a deal through parliament in 'just ten days' on a spreadsheet. So that gives you an idea that the 19th October is possibly the last day to get a deal in front of parliament if you completely accept that we are leaving without any extension. This neglects the issue that a new deal isn't on the table from the EU and the backstop isn't going anywhere.
A last minute deal or no deal situation is highly risky with the ERG on one side and hard core Remainers who think Johnson won't defy the Benn Amendment and thus will try and block a deal to the last
It seems that we will have a game of cat and mouse until the bitter end.