David Weatherston grabbed the full quota of points for Falkirk and extended their unbeaten run over Dunfermline.
The Bairns have avoided defeat against the Pars this season, winning twice and drawing once, and like the last time at East End Park, the Bairns left it late.
Sub Weatherston drifted onto the ball and took his first touch to pass defender Andy Dowie, His second, was tucking the ball inside the post from the edge of the box and sending The Falkirk Stadium wild.
Until then it had been a frustrating afternoon for both sides on a pitch laden with sand.
The first half had little in terms of quality, and though Falkirk were the team on the front foot Lyle Taylor was being iscolated by the Pars defence.
Instead it was Conor McGrandles, Stewart Murdoch and Darren Dods who all threatened with headers from left-wing crosses.
Dunfermline started the second period in the ascendancy and it ebbed and flowed in spells favouring each team.
The Pars saw one header from Callum Morris headed off the line by Blair Alston though ref Steven McLean adjudged it hit the bar and Michael McGovern watched another effort, from Alex Whittle hit the post after a deflection left the goalkeeper rooted to the spot. He rushed out and smothered the follow-up and was off his line again in a late melee when Jonny Flynn kept the scores down with a block on the line to a shot from Jordan McMillan.
But Falkirk had opportunities of their own before Weatherston took his at the first time of asking.
A great cross from Jay Fulton was nodded wide by Taylor, and after an intricate piece of skill from Kieran Duffie, another attack launched up the right side. It took the defender away from the Pars surrounding him and the ball was slipped to Thomas Grant via Taylor. But as the scampering midfielder’s cross floated across goal, it was just too high for Blair Alston.
That left the stage set for Steven Pressley to throw on two late subs – Sean Higgins and David Weatherston – and they capitalised on two teams tiring on an energy-sapping surface, to combine for the winner.