Sheffield Wednesday and Charlton Athletic shared the spoils after a pulsating League 1 encounter at Hillsborough.
The Owls stormed back from a two-goal deficit to claim a point, with substitute Paul Heffernan and new recruit Reda Johnson cancelling out early strikes from Scott Wagstaff and Johnnie Jackson.
Tommy Miller missed a penalty - his first-ever failure from the spot - with Wednesday 2-0 down and at that stage, there seemed only one conclusion to the game.
But the Owls dug deep to produce a stirring second half performance and register what could prove a crucial point.
Wednesday got off to the worst possible start, conceding twice inside the opening five minutes.
First Wagstaff slotted beneath Nicky Weaver following a bright start from the visitors, who then went two to the good when Jackson calmly stroked home from the penalty spot after Darren Purse tangled with Joe Anyinsah in the area.
The stunned Owls improved as the early throes went on and enjoyed much of the possession, particularly in the engine room.
But Wednesday struggled to penetrate a rigid Addicks backline, although at the other end, the threat from Charlton subsided as swiftly as it had begun.
The Owls were handed a lifeline seven minutes before the break but failed to take it when Miller missed from the spot.
Alan McCormack was adjudged to have handled in the box but Rob Eliot dived low to his left to expertly deny Miller a goal.
That miss was testament to a first half to forget for the hosts, who needed a quick response after the break - and promptly got it in dramatic style.
Half time substitute Jermaine Johnson immediately caused the Charlton rearguard problems and the Jamaican's cross on 47 minutes fell invitingly for fellow sub Heffernan to blast home from close range.
The revitalised Owls continued to press and were level on 51 minutes when Chris Sedgwick sent over an accurate cross that Reda Johnson headed into the back of the Kop net.
It was an amazing turnaround to the game and from there on in, Wednesday dominated. Almost all the play unfolded in Charlton's half as the home side surged forward in a bid to claim an unlikely win.
James O'Connor went close with a rasping low drive that whistled wide, Heffernan headed against the post at the death and the contest finished all square, with the Owls ultimately frustrated not to take maximum points from what earlier had seemed a certain home defeat.
Owls: Weaver, Morrison, Purse, R Johnson, Jones, Sedgwick, O'Connor, Miller, Teale (J Johnson 46), Morrison, Mellor (Heffernan 46)
Unused substitutes: Jameson, Spurr, Beevers, Palmer, Potter
Charlton: Elliot, Francis, Jackson, Semedo, Wagstaff, Racon (Ecclestone 69), Doherty, McCormack (Redid 84), Fry, Anyinsah (Sodje 61), Dailly
Unused substitutes: Worner, Abbott, Fortune, Jenkinson