Gerry is the groups teacher, in charge of the Falkirk academy UFO club. He planned the trip, but he loses authority in the first series when he disappeared over a waterfall.
The kids then have to take matters into their own hands with no adult supervision at all. Gerry is found near the end of series one, and is abducted with the rest of the group. He is the only one to have any memory of the encounter, and is believed to be mentally unstable by the government. The group see him in the hospital in series two, and then again in series 3 when he helps them find Asterid island.