Gareth Ainsworth came off the bench to inspire Rangers to an unlikely share of the spoils against Preston North End.
The R's midfielder scored one and made another, as Luigi De Canio's men staged a late salvo at Loftus Road.
Trailing to Neil Mellor's first half strike and a Matthew Connolly own goal, Ainsworth fired an unstoppable half-volley past Andy Lonergan in the 90th minute, before Dexter Blackstock soared to head home an equaliser in the third minute of added time.
With injury ruling out Rowan Vine and Akos Buzsaky, De Canio was again forced to shuffle his pack.
Martin Rowlands returned following a recent neck complaint, while Patrick Agyemang led the line against his former Club.
In-form hit-man Mellor retained his place in the Lilywhites line-up, playing alongside Chris Brown in attack.
And it was the former Liverpool front-man who was presented with the first chance of note inside the opening three minutes.
A fortunate ricochet fell into the path of the burly striker, but Lee Camp reacted to the danger superbly, darting from his line to save at the striker's feet.
Camp was Rangers' busiest player in the opening exchanges, saving with his feet again five minutes later, as Simon Whaley thrashed a right foot shot on target from 15-yards.
The R's early frustrations were summed up in the 13th minute, when Rowlands was booked for a late challenge on Darren Carter.
De Canio's men improved as the half wore on though, with Damion Stewart driving forward at every given opportunity, and that man Rowlands orchestrating proceedings from the middle of the park.
However, despite their improved offering, the Rangers faithful were made to wait until the 36th minute to see their side fashion a goalscoring opportunity.
Dexter Blackstock fired straight at Andy Lonergan and the save proved decisive, as the Whites raced straight up the other end to open the scoring.
Mellor was gifted the freedom of the six-yard box, as he slammed home a right footed volley, after Youl Mawene flicked on Paul McKenna's corner kick.
In the absence of playmakers Vine and Buzsaky, Rangers lacked a cutting edge.
Right back Michael Mancienne went closest to putting the R's on level terms on the stroke of half-time, when he fired a yard or so wide from fully 25-yards.
The visitors were forced into a change at the break, with a hamstring injury ending goalscorer Mellor's day prematurely, as he was replaced by Tamas Priskin.
Rangers began the second half with renewed vigour, with Rowlands firing wide in the 52nd minute following neat approach play from Gavin Mahon.
Chances remained at a premium though and sensing his side were becomingly increasingly frustrated, De Canio introduced Angelo Balanta at the expense of Hogan Ephraim on the hour mark.
But it was the visitors who bagged the crucial second goal of the contest moments later, when Chris Sedgwick's centre was unceremoniously directed into his own net by the unfortunate Connolly.
It was all Preston now and Priskin nearly made it three five minutes later, when his stooping header was magnificently tipped around the post by the overworked Camp.
Blackstock prodded the ball inches wide as the clock ticked down, before Ainsworth smashed an unstoppable arcing volley into the roof of the net to give Rangers hope.
And the comeback was complete three minutes later, as Blackstock rose tallest to glance Ainsworth's cross into the far corner.
It was a quite sensational end to an otherwise disappointing display from the hosts, but De Canio won't care a jot, as his side stretched their unbeaten home run to five matches.
QPR: Camp, Mahon (Ainsworth 67), Stewart, Mancienne, Blackstock, Rowlands, Connolly, Agyemang, Ephraim (Balanta 62), Hall, Leigertwood.
Subs: Barker, Pickens, Lee.
Scorers: Ainsworth 90, Blackstock 93
Bookings: Rowlands 13, Connolly 41
Preston North End: Lonergan, Davidson, Mawene, Sedgwick, Brown, Carter, St Ledger, Whaley, McKenna, Jones, Mellor (Priskin 46).
Subs: Chaplow, Hill, L Neal, C Neal.
Scorers: Mellor 37, Connolly 65
Bookings: Brown 66, Lonergan 90
Referee: Mr C Penton
Attendance: 14, 966
