At a convention in Seattle Dominic Keating said that the Enterprise will be attacked by a "white squid- like creature" in the episode. Scott Bakula (Jonathan Archer) and Connor Trinneer (Trip Tucker) hung from harnesses for hours wrapped up in a "white gushy thing" while the sequence was filmed. (February 27, 2002 - TrekToday)
Roxann Dawson: "I really have to take my hat off to Scott [Bakula] and Connor [Trinneer] who spent days suspended in harnesses covered in slime without a single complaint. They were somehow able to maintain their sense of humour under extreme circumstances. [...] This episode was difficult, challenging and... well, at times I thought it was almost impossible. We had to create an alien organism which grows and takes over cargo bay, ensnaring some of the crew in its web. How do you create such a creature, make it believable and make it scary?" (March 07, 2002 - TrekToday)
Rumoured to feature the Enterprise encounter a ship owned by a race known as the Kreetassens. When the crew inadvertently insult the aliens, a lifeform from the Kreetassen ship boards the Enterprise and nests in one of its cargo bays. With its octopus-like tentacles it snatches several members of the crew, including Archer and Tucker, leaving T'Pol to come up with a way to rescue them. (March 13, 2002 - TrekToday)
Rumoured to feature Malcolm Reed inventing the first energy "force field." (March 13, 2002 - TrekToday)