"As far as I know no one's been down here." The idea that they might be foreign bacteria in Stacy is worryingly plausible. But if all that meant was they were thrown back to Engineering by tentacles that wouldn't be too bad. He just couldn't see how Stacy would manage it from here.

He stopped and looked around the tunnel they were walking down. "We can't go back because one end of that tunnel is blocked and the other narrows." Admittedly there were other tunnels branching off it, but there was no guarantee they would be better than this one. "Let's keep going and see where we come to." He started walking again.

The tunnel curved around and then abruptly split into two. Ian sighed. "This feels like a maze."