Exeter let a one goal lead slip, allowing four goals in the latter half of the third, and the Hawks lost 4-1 to Grimsby. The PJHL Schmalz Cup semifinal series is now tied 2-2.
The Hawks' Nick Sammons opened the scoring at 17:34 of the first.
Jacob Balca put the Peach Kings on the board at 10:37 of the third. Maxime Pleau's first goal of the game at 14:57 would stand as the game winner. Jaleel Adams gave the Peach Kings some insurance at 17:19 and Pleau scored again on an empty Hawks net with less than a minute left to play.
Morgan Reed took the loss, allowing three goals on 28 shots. Riley Maskell made 18 saves.
Game 5 is in Grimsby on Friday at 8 p.m.