4-03: Hippocratic Oath
Captured by a renegade group of Jem’Hadar, Miles and Bashir quarrel whether to help them break their addiction to Ketracel-white.
Jake tags along when Sisko and Odo head to Earth to shore up defenses against a likely Changeling invasion.
4-21: For The Cause
Sisko's loyalties are tested when his girlfriend, Kassidy Yates, is an accused Maquis collaborator.
4-25: Broken Link
When Odo is struck with an unknown illness, Sisko seeks help from The Founders, who enact a punishment against Odo for harming another Changeling.