City floored Grimsby with a stoppage-time goal for the second time this season.

A late, late penalty earned a point at Blundell Park in October. This time, Joe Colbeck's strike in added time sealed a come-from-behind victory.

Colbeck popped up with a deadly finish after Eddie Johnson had chested down a pass from Luke Medley in the Grimsby box.

The Mariners had lost five on the bounce but found themselves a goal up after only nine minutes.

Darren Williams was caught in possession by Nathan Jarman and Ciaran Toner's cross was bundled home by Peter Till.

But the goal came at a cost for the visitors as Till was injured in the challenge with Luke O'Brien and had to be taken off on a stretcher.

Like Barnet in the previous home game, City made hard work of the first half and were lucky not to fall further behind. Nick Hegarty's shot looked to be going in but Ryan Bennett's touch made sure - and he was standing offside.

City got better towards the break with Omar Daley not making the most of two good chances.

Peter Thorne was just wide with a header soon after the re-start as City started to take control.

And they were rewarded with a goal after 62 minutes which owed as much to Colbeck's non-stop chasing as Thorne's clever finish.

Colbeck closed down Tom Newey enough to panic the defender into an under-hit backpass. Thorne pounced on it and steered round keeper Phil Barnes before beating defender Nick Fenton on the line for his 15th goal of the season.

City pressed for a winner and Kyle Nix spotted Barnes off his line and tried to beat him with a chip which the keeper just reached with a finger-tip save.