Killen found the equaliser with a diving header in the 56th minuteafter his earlier long-range shot was kept out by a fully-stretched Balogh and Maloney had cut back a fine cross to the back post.
Torquay took a deserved lead aminuteafter the restart after Benyon reacted the quickest to a Hargreaves flick-on from along Kevin Nicholson throw and guided a header into the bottom corner.