Henry returns, but is he really free? What of his family, will he and the boys be able to find them? You will just have to listen to find out.

The equipment appears to be ready for use, but will it work? If it does will it take the group back home or elsewhere? If home, to who's time frame?

Stuart has returned to the main building after his struggle with the Saysestrian, but what is he going to do now that the Saysestrian appeared to be in trouble?

Just one more thing to make and the Saysestrians are interfeering with that, so Stuart is sent to watch over the latest bubbling mix of melting rocks. Can Stuart stop the Saysestrians on his own?

For days the group have worked hard to fix what the Saysestrians had burnt. Andrew has finally come up with a solution, but how does it work, Henry and Stuart are at a loss to understand it. Andrew demonstrates his invention and all becomes clear.

The boys wait to see if Henry returns, the wait seems like and enternity, when finally they hear the Kelidons, the boys wonder if Henry is with them, or is he laying dead or injured deeper in this building? Just what has Henry done, if anything?

Henry marches out, with the boys following, not knowing what he has planned, but whatever it is involves the Kelidons as they are following behind. Can Henry stop the Saysestrians, or do they still hold the upper hand?

The group are reminded that the Saysestrians want them to work towards their aims and not towards escape from this place. Henry has received orders to provide feedback on their progress, but what should he tell the Saysestrians ?

Henry and Stuart are discussing their progress, but neither can understand how Andrew is going to make the crystals in Henry's Laborartory, generate the base signals that Henry's device needs.

After having met one of the Saysestrians, the boys are told there will be no way back home, then they are taken to a room, given some bedding materials and left alone. They discuss the meeting, then settle down to sleep, if they can get to sleep. In this episode we find out what happens when they get up the next day.