Lewes manager Steven King was left speechless after watching his side come from 4-0 down to win 5-4 against Redbridge at the Dripping Pan.
The visitors looked to be cruising to victory after goals from Julian Edwards (two), Richard Thomas and Helder Valdez put them 4-0 up inside 35 minutes.
Michael Harvey started the comeback just before the break with a long-range effort but at that stage it looked to be no more than a consolation.
Paul Kennett added a second for Lewes 12 minutes after the break with his first of the season, then Francis Duku made it 4-3 six minutes later after being set up by Lee Newman.
The home crowd went into raptures 14 minutes from time when Junior Kadi converted a penalty to level matters.
However, there was even better to come as Kirk Watts completed the remarkable fightback with the winner seven minutes from time.
King said: "I don't know what to say about it. It was just unbelievable. I have never seen anything like it before.
"I went absolutely ballistic at half-time, which I don't normally do. I think the players were a bit shocked by that so they went out and put things right."
The win stretched Lewes' unbeaten run to eight games.
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