By Des McKeown at Firhill
Ryan Stevenson’s 90th minute cross come shot secured all three points for Alan Archibald’s side in a match that looked odds on to finish with honours even.
Stevenson, a second half substitute, received the ball in the wide right area of the pitch and swept an in-swinging left footed cross towards fellow sub Mathias Pogba in the dying seconds that deceived everyone and nestled in the bottom corner of the Inverness net.
The game had started so differently for the visitors who took the lead after only six minutes when Miles Storey latched onto a pass in the right channel before sliding the ball below Ryan Scully in the Thistle goal.
It was all Inverness in the early stages and it took Partick 20 minutes to get into the game.
When they did it was fans favourite Kris Doolan who was the spark and he brought out three decent saves from Fon Williams in the Inverness goal.
He was not to be denied however and levelled the match three minutes before the break when he drilled a left footed shot into the bottom corner from 10 yards out.
Fon Williams had another series of saves in the second half as he looked to secured his side a valuable point until Stevenson’s cross evaded him in the last minute.
Partick gaffer Alan Archibald was delighted to eventually win with a late goal having lost a number of last gasp counters in recent matches.
John Hughes, on the other hand, said that he was really disappointed with the timing of the goals his side conceded and claimed that there would not be a worse defensive goal in Scottish football this season than the Thistle winner.
During the match there was an emotional minute’s applause in memory of former Partick Thistle chairman Brown McMaster.