Abigail leaves town to testify on behalf of Henry while Bill joins her, but will testify against him. Abigail must convince a strict judge to give Henry a second chance but it seems like the odds are against it. With Bill gone, Lee is made acting sheriff and, despite Rosemary's encouragement, isn't confident that he is up to the task. Still anxiously awaiting Jack's return from the Northern Territories, Elizabeth is given a diversion thanks to a surprise visit from her sister, Julie, who reveals to Elizabeth the surprising career path she's decided to take. Clara thinks it may be time for a break from Jesse but becomes jealous when she sees Jesse spending time with Julie. Dr. Carson is determined to stop a traveling salesman selling a tonic that has caused a stomachache epidemic in town, which leads to a surprising arrest.

Jack returns and begins planning his future with Elizabeth; Elizabeth teaches her students the difference between facts and speculation; the town is put on edge when Lee cannot withdraw funds to pay his employees.