Wednesday ended their run of four successive away defeats with a draw against play-off hopefuls Forest but will kick themselves for not taking home three points,
The Owls led 1-0 and 3-1 with goals by Chris Maguire, Lewis Buxton and Joe Mattock - his first in the League for the club - and dictated large periods of play.
But a first equaliser by Jamie Mackie and a header by sub and ex-Owls striker Marcus Tudgay which made it 3-2 kept Forest in the game.
Home centre back Danny Collins was sent off when his team still trailed but Jamie Paterson made in 3-3 in the 87th minute and the Owls were hanging on at times near the end.
In Stuart Gray’s line-up, Liam Palmer stayed at right back and Buxton at centre half alongside recalled Miguel Llera, with Glenn Loovens and Oguchi Onyewu ruled out.
Giles Coke, a playing sub last Friday, remained in midfield.
A third change saw Jeremy Helan come in for Caolan Lavery.
Wednesday made a confident start, showing composure on the ball, and their mood will have been even brighter after they grabbed a 15th minute lead.
Collins brought down Maguire in the box - the result a resounding appeal for a penalty from the away fans at that end followed by the referee pointing to the spot and ignoring a protest by Forest players.
Maguire had to keep his nerve during a long delay while Mr Duncan stopped players from encroaching into the box.
The Scot whacked home his eighth goal for the Owls this season and his 10th in all, counting the double he got for Coventry, though Karl Darlow got a touch in a dive down to his left.
A goalmouth block by Llera as Chris Kiirkland was beaten by a shot from Derbyshire prevented a swift response from Forest.
Wednesday knocked the ball around patiently at times.
They refused to allow the opposition to take the initiative or get the home fans excited - fans whose mood was also clouded by bookings for centre half Jamaal Lascelles and Mackie for fouls on Maguire and Joe Mattock.
Cue cheers from the crowd when Antonio was shown a yellow card for a clumsy but unintentional offence against Henri Lansbury.
Then a foul by Mattock on Mackie for which the left back was cautioned brought a moment’s pressure for the Owls.
They survived the resulting free kick, but not a lovely left-wing cross by Jamie Peterson soon afterwards that allowed Mackie to steam in and leap to bullet home a header, in the 43rd minute.
As if Wednesday were indignant at being pegged back after having so much possession, they swept forward.
Best drilled a chance wide from a narrow angle in the 45th minute. Three added minutes were announced, and in the third of them Maguire guided a left-wing corner to the far post and Buxton put away a simple downward header.
It was the defender’s second goal of the season and only his fifth in his five and a half years with Wednesday.
A familiar pattern returned in the second half: the Owls looking good in possession, probing, going forward.
But a set-piece brought their next threat. A Maguire free kick was headed down by Llera, and a shot from Buxton was blocked.
Then a clever and obviously rehearsed set play brought the third goal.
Everyone will have expected Maguire to hoist a right-side corner into the box. Instead, he drilled it along the ground to the feet of Mattock, who was at least 25 yards out and unmarked.
The left back controlled the ball and smacked a terrific left-foot drive into Darlow’s bottom left-hand corner.
Mattock, whose only other goal in two years with Wednesday was in the FA Cup 2-1 win at Rochdale in January, could hardly have picked a better way to get off the mark in the league.
A scare came when Llera challenged Lee Peltier and it looked as if the ref signalled a penalty. But in fact he had given a goal kick.
Moments later, Llera powered a header just over the Forest bar; Best soon followed suit, with a better chance, and Wednesday remained firmly in control.
But Gary Brazil sent on Tudgay and he had been in action for only 16 minutes when he soared to head home a right-wing cross at the far post, in the 76th minute.
Suddenly it seemed Wednesday were far from home and dry. A second yellow card for Collins, however, for a foul on the touchline,, sent Forest down to 10 men three minutes later.
The home crowd were outraged when Helan, a few minutes after being booked for a foul, kicked the ball away and escaped with a lecture rather than a second yellow.
Helan was replaced by Nuhiu, perhaps to avoid the risk of him being sent off.
But the 10 men stunned Wednesday with an 87th minute equaliser. From a free kick 22 yards out, winger Paterson whipped the ball into Kirkland’s top right-hand corner.
FOREST: Darlow 6, Jara 5 (Halford 76), Collins 6, Lascelles 7, Harding 7, Peltier 7, Lansbury 6 (Osborn 83), Mackie 8, Paterson 8 , Henderson 5 (Tudgay 60, 7), Derbyshire 6. Subs: Greening, De Vries, Cox, Gomis.
OWLS: Kirkland 7, Palmer 8, Buxton 8, Llera 7, Mattock 7, Lee 8, Coke 7, Antonio 6 (Lavery 71), Helan 7 (Nuhiu 83), Maguire 8, Best 6. Subs: Martinez, J Johnson, Taylor, Corry, Afobe.
Goals: Maguire 15 (pen), Buxton 45+3, Mattock 57 for Wednesday; Mackie 43, Tudgay 76, Paterson 87 for Forest.
referee: Scott Duncan (Northumberland).
attendance: 20,185 (1,788 away).