If you load the "FAQ" section, you'll come across this part:
Q. Will there be multiplayer capability?
A. No, it's really being developed as a single player game and multiplayer simply doesn't fit into the development schedule. Despite what you may have read in recent articles, there will be no multiplayer support in Trespasser. IF we have the opportunity after we ship, we may add it then. That is primarily up the DreamWorks, not the developers of the game.
"Well, as long as you're under there, you can check the breakers," Thorne said. ... "There's a box right behind the front bumper. Over on the left."
"I see it." [said Sarah]
...
"The box is in backward. Flip all the switches the other way. Are you dry?"
"No, Doc. I'm soaking wet, lying in the damn mud."
~Michael Crichton