Scotstown secured their place in the Ulster Senior Club Football Championship semi-finals following a hard-fought victory over Magherafelt in Clones on Saturday evening.
The match finished 2-21 to 2-20 after extra time, marking a significant turnaround for the Derry side who had trailed significantly throughout the contest.
Patrick McLarnon opened the scoring for Magherafelt before Francis Maguire restored parity in the opening period.
Carney completed a fluid sequence of play involving Jack McCarron and Darragh Murray to send Scotstown's Odhran Lynch beyond the line.
Murphy converted from close range after the holders failed to clear their defensive lines, but Tommy Mallen, Kieran Hughes and McCarron responded for the champions.
Nicky Sherlock extended the lead to five points immediately following the restart, yet Magherafelt's sustained pressure yielded four unanswered goals through Shane Heavron, Murphy and McLarnon.
Sherlock managed to edge ahead after the second restart before Mallen converted his own saved effort to fire Scotstown's second goal into the net.
The Derry champions recovered to level at 1-6 apiece before two-point strikes from Rory Beggan and Mallen granted Scotstown a 1-10 to 1-6 interval advantage.
Micheal McCarville and substitute Mattie Maguire stabilised the home side, although Rory Small's long-range strike kept the Derry champions firmly in contention.
Controversy arose when Beggan was penalised for a challenge on Heavron, who converted the resulting free kick to put Magherafelt ahead for the first time since the opening minutes.
Scotstown established narrow leads twice during extra-time before Small and McLarnon responded to leave the sides level again at 1-18 each.
Additional goals from McCarron and Max Maguire appeared to decide the match, but Magherafelt refused to surrender hope in the dying moments.
Scotstown retained possession as the clock wound down to secure a hard-fought triumph and keep their Ulster title defence alive.
Beggan produced a crucial save to deny Heavron a goal before Murphy's fisted point brought the sides level approaching stoppage time.