Heart of Midlothian has a chance to be crowned champions of Scotland after 66 years if they beat Falkirk and Celtic loses to Motherwell. This scenario is unlikely but not impossible, given Hearts' strong home record.
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For Heart of Midlothian, the tantalising, scarcely-believable, bottom line is this: after 66 years they may be crowned champions of Scotland on Wednesday.
A large asterisk must sit beside that sentence, of course. For history to happen, Hearts must beat Falkirk at Tynecastle and Celtic lose to Motherwell at Fir Park.
Few can see it turning out this way, but Hearts' home record is exceptional and Motherwell have already beaten Celtic this season. Schooled them, in fact.
That was in Wilfried Nancy's time, though. A relative lifetime ago.
There's been so much change at Celtic, Martin O'Neill's wise counsel dragging the team forward and back into contention after the dismal days under Nancy.
They're still playing catch-up, though. Still chasing and knowing all the while that one slip of their own against Jens Berthel Askou's impressive and dangerous side and it could be curtains.
Despite trailing Hearts by a point, Celtic are the bookies' favourite to win the title again. The cold-blooded odds-layers have rarely bought into the Hearts fairytale, most of them reckoning that Celtic would come good in the end.
The mere fact that Hearts have come this close is trippy. Thirty-six games played, 3,240 minutes across 10 months, table toppers since September and they have arrived at this point.
In their greatest league season since falling on the last day 40 years ago, they've been doubted along the way. Laughed at in the beginning when Tony Bloom bought into the club and said they could split the Old Firm in one season, and questioned in December when they dropped points in four games in a row.
Scepticism came in waves in late spring when they lost to two of the bottom six and then drew with Livingston, plumb last in the Premiership.
Injuries hampered them then as they hamper them now, but Hearts kept the show on the road. 'Believe' is the Tynecastle mantra, the gospel the manager Derek McInnes has preached.
On Monday afternoon, it was quiet in the Tynecastle Arms, the storied boozer in the footprint of the stadium. A pub but also a strange kind of museum.
A pair of boots in a glass box (John Robertson's first pair, local legend has it); a plaque commemorating the 5-1 Scottish Cup final win against Hibs; walls full of photographs, glorious moments captured in time.
Will there be more recent ones now? Those nursing their pints on Monday weren't sure. They want to say yes but they don't want to get their hopes up either.
They fear heartbreak. They've had it before. A few of them were there on the last day at Dens Park in 1986 when a dream turned into their greatest nightmare.
One man's father was there in 1965 when they were denied again. Trauma passed down the generations.
Hearts must beat Falkirk at Tynecastle and Celtic must lose to Motherwell at Fir Park.
It has been 66 years since Hearts last won the Scottish championship.
Hearts has an exceptional home record this season, which gives them a better chance of winning against Falkirk.
Celtic has undergone significant changes, with Martin O'Neill providing wise counsel and improving the team's performance after a difficult period under Wilfried Nancy.
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"I didn't know what to do with myself afterwards," says Mark of that afternoon in 1986 when the league slipped through their fingers in defeat against Dundee.
"I remember the goals that beat us and I remember this incredible feeling of wanting to get the hell out of there as fast as possible. I remember walking forever to get the bus and all the way along I saw grown men in tears and being consoled by their sons and daughters.
"That sticks with me. Children comforting fathers, not the other way around."
Mark believes - or wants to believe. That business at Fir Park on Saturday has rattled him, though. Him and many others in maroon.
At 1-1, Hearts' Alexandros Kyziridis hit the deck after an apparent trip from Tawanda Maswanhise. Referee Steven McLean didn't give the penalty. VAR invited him to take another look.
Still he stuck by his decision, to the fury and astonishment of Jambos' everywhere. McInnes says Willie Collum, head of referees, has confirmed that an error was made.
You couldn't repeat what the boys at the Tynie Arms made of all that. They weren't happy, put it that way.
They are, er, not wholly convinced that there's a level playing field when the east coast is threatening to usurp a giant from the west. Think Alex Ferguson ranting about west-coast bias in the 1980s, multiply it by 10 and you're in the right territory.
Figure caption,
A rousing rendition at Tyencastle
Celtic might well kill the dream, but it's lasted this long, which is way, way longer than anybody thought it was going to last. It's been a captivating ride.
In the beginning, the interest from outside was a trickle. Some media organisations down south and in Ireland wanted to know more about the fine start Hearts had made to the season, the wins over the Old Firm, the Bloom story, the mystery of Jamestown Analytics, Radio Braga and all of that.
Then the trickle became a flow. As Rangers, then Celtic, toiled under the mis-management of Russell Martin and Nancy, the Hearts story really took flight.
Now they were getting in touch from France and Germany, Portugal and Spain, Austria and Belgium, Greece, the Netherlands and Sweden. Newspapers, magazines, radio, television, podcasts - all wanting a piece of the underdog threatening world football's greatest duopoly.
As Hearts refused to buckle at the top of the league, the flow became a flood. Now it was Bloomberg and ESPN on the line from America, Revista Balompie getting in touch from Mexico, Radio Vitoria reaching out from Brazil, the Financial Review looking for a chat from Australia.
More requests came in from Uganda, Kazakhstan and Nigeria. The boys of the Gorgie Road had gone global.
The scale of what they were going for blew people to kingdom come. Sixty years since they last won the league; 41 years since anybody bar the big Glasgow two had won it.
Fifty-five titles for Celtic and 55 for Rangers. The most anybody else had was four - 85% of all league titles since competition began had gone the way of the Old Firm. Was all that history about to get rewritten? Really?
A season ago, Hearts finished seventh, fully 42 points behind Celtic.
Foreign media gorged themselves on the tale of the haves and the have-nots. Hearts have 15,500 season ticket holders to Rangers' 45,000 and Celtic's 53,000.
In two decades of European competition alone, Celtic have brought in revenues in the region of £370m-£420m. For Rangers that estimate ranges from £235m-£270m. For Hearts it's around £25m. Their most recent turnover was £24m, pocket change compared to Rangers' £94m and Celtic's £143m.
Few people thought that there'd ever be a day when the Old Firm were caught and for months and months we've all twisted in the wind on that one. Yes, Hearts will win the league. No, Celtic or Rangers will catch them.
With two games to go there is but one certainty - Rangers are not catching anybody. They're gone, badly wounded by Motherwell, profoundly hurt by Hearts and then finished off by Celtic on Sunday.
With 180 minutes left to play, Hearts are where they have been all year and where they have been for much of the season - top of the league. More points than Celtic - by one - and a better goal difference - by three.
They've won games in the 86th minute, 87th minute, 88th minute and have won three times beyond the 90th minute. They've won four straight games against the Old Firm, a historic feat.
They've beaten Celtic, Rangers and Hibs home and away, another accomplishment for the ages. They've been top of the table at Christmas, a rare occurrence for any club outside the behemoths.
They're on 77 points, the biggest haul of any non-Old Firm team in Premiership history. They've broken new ground and set new records, they've challenged the way of things in Scotland and have scared the wits out of the biggest guns.
Wednesday might be the culmination of something extraordinary. It might instead come on Saturday. Or it might not come at all.
So much done and yet so much left to do in the quest for immortality.