The "attractive woman" asks Attwood to negotiate a peace between the humans and a faction of the new species.
Sloan, Attwood and Daniels meet a mysterious child, the offspring of a human mother and a Homo dominant father.
When Sloan and Attwood try to avenge the death of a team member, they learn the Homo dominants may have perfected cloning.
Sloan and Tom track Ed to Alaska, where he has been abducted by Copeland; species members develop a plan to wipe out the human race.
The new species uses contaminated juice to try to destroy a generation of children.
Sloan and Tom (Debra Messing, Adam Storke) go into hiding when Lewis convinces the world they are leaders of a murderous clan.
Lewis takes Sloan to his hideout when Lisa is captured; Ed discovers that Kelly's DNA has been altered.
Tom and Sloan investigate the bombing of a bar and discover Tom's mentor is involved; a woman who witnessed Lynch's suicide contacts Ed.
Attwood brings the pillar back from the secret city for Sloan, Ed and Tom to investigate its meaning.
Tom helps Sloan and Ed travel to the desert in Mexico to find the new species' birthplace.
Lynch captures two women and takes them back to the cave; Sloan and Daniels find Lynch at the cave.
When Lynch escapes from prison and goes on a killing spree, Sloan learns how really dangerous the new species is.
A scientist (Debra Messing) struggles to uncover the truth about a new human species created by global warming.