Penrith's magical end-of-season run will last at least another week after they ended Manly's season with a controversial 22-10 win at Allianz Stadium.
With scores locked at 10-10 on Saturday night and six minutes remaining, Panthers centre Tyrone Peachey was awarded a try after a ricocheted Bryce Cartwright kick rebounded off his knee and chest before he scored.
There was a suggestion the ball could have brushed Peachey's hand on the way from knee to chest, however the bunker was unable to find sufficient evidence to overturn the on-field call of try.
The Panthers then closed out the game through a Cartwright try in the final minute to wrap up a pulsating finals match, booking them a semi-final date with Brisbane at Suncorp Stadium likely for next Friday.
"The road hasn't been real easy at times," Panthers coach Anthony Griffin said.
"But everyone is still going and we're still there and we're going to Brisbane now.
"I think our whole club has shown a lot of resilience this year."
Griffin also refused to rule out the return of club captain Matt Moylan for the clash, with the fullback-turned-five-eighth still absent on personal leave.
"I haven't got an obvious answer for you there," Griffin said when asked if Moylan would return.
"We'll see what happens."
The Panthers still had plenty of options in attack without him.
Cartwright had the highest point of his up-and-down season with two tries and one assist, as he provided the original kick for Peachey's try.
Nathan Cleary was also immense at halfback for the Panthers alongside stand-in five-eighth Tyrone May.
Cleary, 19, set up Cartwright's first try when he kicked for the upright, while he controlled the game perfectly in the closing stages.
"I just thought their composure under pressure was excellent," Griffin said.
"Sometimes our decision making wasn't good, but I thought our No.7 and No.6 played really tough."
Meanwhile Manly coach Trent Barrett was livid with the officials.
After they went to the break trailing 10-4, Manly thought they had drawn level early in the second half in front of a crowd of just 15,408 at Allianz Stadium.
The Sea Eagles were denied a crucial try when Dylan Walker was ruled to have been marginally offside, chasing a Blake Green grubber, before he put the ball down after the on-field call went up as a try.
They finally hit back when Lewis Brown stepped through Penrith's left-edge defence to lock the scores at 10-10 with 18 minutes to play, before Peachey was awarded his try.
"What I would like is the bunker and (referees boss) Tony Archer and the referees to go into my shed and explain to my players that their season is now finished on the back of those two calls," Barrett said