4-11: Observer Effect
With Hoshi and Trip suffering from a fatal illness, Organians study the Enterprise crew.
4-14: The Aenar
Archer and Shran seek out the Aenar, an Andorian subspecies, to investigate their connection with recent attacks.
Phlox is abducted by Klingons and forced to find a cure to a fast-spreading illness. Meanwhile, Section 31 reaches out to Reed.