Chester fought back in dramatic fashion to earn a point against fourth placed Grimsby.
Ollie Palmer and Jon-Paul Pittman gave the visitors daylight - but strikes from Ben Heneghan and a late penalty from John Rooney provided Chester with a more than deserving point.
The away side were the side who started the brighter; with captain Craig Disley volleying a shot straight at Jon Worsnop.
However, the Blues' chance to take the lead was shrouded in controversy when George Thomson fed Oli McBurnie, who was bundled over - but the referee refused to point to the spot.
Ollie Palmer was causing problems up top, stabbing a cross to Nathan Arnold who somehow skied his rifled effort over the bar from ten yards out.
Palmer then had a more significant part in the match; when he gave the Mariners the lead on 21 minutes.
Clever, intricate passing between Arnold and Jon-Paul Pittman allowed the latter to turn the ball 'round the corner' for Palmer to stab home from close range.
Pittman then had a massive opportunity to double the lead, when a long kick from James McKeown found its way through to the forward, who was denied one on one by Worsnop who palmed the ball just wide of the post.
Nevertheless, Chester began to dominate the possession game and created an early second half chance when Brad Abbott hit a low drive wide of the far post.
However they were struck with a cruel blow midway through the second half courtesy of Pittman.
Nathan Arnold's low shot forced Worsnop into a stunning save - but Pittman was quickest to react and slotted home from close range.
Steve Burr's men refused to give up on the result however, with sub Craig Mahon forcing McKeown into a low one-handed save.
Then, Ben Heneghan's determined run into the box paid off for the Blues - as he met Higgins' low cross and fired home to half the deficit.
Chester then managed to claw themselves level, courtesy of a penalty.
Higgins' clever reverse pass to Hughes drew a foul from Robertson; and sub Rooney had no problems in dispatching the penalty.
Ibou Touray then volleyed a shot inches wide of the far post, as the Blues looked to complete the ultimate turnaround.
There was a frenetic end to the game, as Jolley was denied brilliantly by Worsnop then Pittman was stopped by an incredulous block from Kay.
Late substitute Craig Hobson then had the chance to win it in added time, but was twice denied by McKeown in a matter of seconds.
Michael Kay then hit a clearance against Jolley which rebounded an inch over the bar - a fittingly frantic end to a frantic game.
Chester: Worsnop, Higgins, Heneghan, Kay, Touray, Hughes, James, Abbott (Hobson 90+1), Richards (Rooney 67), Thomson (Mahon 35), McBurnie.
Subs Not Used: Viscosi, Charnock.
Grimsby: McKeown, Pearson, Magnay, Mackreth, Disley, Clay, Pittman, Arnold (Jolley 86), Nsiala, Palmer (Parslow 72), Robertson.
Subs Not Used: Bignot, Brown, Hannah.
Goals: Heneghan 75, Rooney (p) 84; Palmer 21, Pittman 67
Referee: Martin Coy