It's now less than 24 hours before the Venus landing and tension is rising among the crew and ground control. With Paula's inability to pilot the lander due to the damage to her thumb, Donnor is assigned the task but he too is having great difficulty with the various simulations. Zoe remembers something he told her long ago that helps him out. At Mission Control, Goss is having to get Rollie out of jail and his car accident. His lack of contact is having a effect on Jen. The medical information indicates that the crews' gene structure is mutating but Eve Shaw won't let Claire tell them about it since there's nothing that can be done about it.