Wingate & Finchley saw a 1-0 lead slip through their grasp in the final 20 minutes - in controversial fashion - at the Maurice Rebak Stadium to Tonbridge Angels, who eventually snatched a 2-1 win in north London.
Within four minutes, Alex Read broke the offside trap for Shane Gore to get down low and make the stop.
At the other end, Rob Laney pounced onto a loose ball, yet his left-footed effort was hit straight at Jonathan Henly.
Chinedu McKenzie headed straight at Gore when he manouvered inbetween the Blues' rearguard on 13 minutes.
Two minutes on, Arthur Lee tripped Laney over on the edge of the box for Dave Norman's men to take the lead.
Tommy Tejan-Sie's free-kick was blocked by the wall, only for Reece Beckles-Richards to volley in the rebound, via a deflection on 17 minutes.
A minute on, Tanasheh Abrahams' speculative half-volley from 25-yards was caught by Henly.
Abrahams broke down the left and struck low, but found the frame of a stubborn Henly, three minutes on.
A flowing interchange on 25 minutes between Laney and Charlie Cole saw the latter blaze over the upright.
Five minutes on, Ahmet Rifat and Tejan-Sie combined to feed Laney down the inside left, whose driven strike hit the near-post.
McKenzie trickled his way through on goal, but aimed narrowly past the post beyond an on-rushing Gore, on 37 minutes.
Four minutes on, Tejan-Sie's right-footed low hit was held onto and a minute before the break, Laney curled one from afar which evaded the far-post.
Two minutes into the restart, Gore was kept busy at his near-post. At the other end on 55 minutes, Tejan-Sie's free-kick was headed goalbound by Rifat, who gave Henly something to think about.
Just past the hour mark, Beckles-Richards fired over the upright from distance before a minute on, Laney set the former up for a shot who was left frustrated by Henly.
The Angels found hope on 70 minutes when Alieu Njie was adjudged to have allowed Joe Turner to step-up from the penalty spot, who duly smashed in an equaliser.
And with the north Londoners pushing to get back ahead, heartbreak beckoned. Jared Small found space in behind down the inside right, who struck a winner inside the near-post with three minutes to go.
A result which left the Finchley Men bewildered.
Report by Khalid Karimullah