Elizabeth and Nathan uncover Oliver’s secret, and Rosemary worries Lee has a secret of his own. Allie’s interest is piqued when Earl Wyatt returns to town.

Elizabeth helps Allie plan a birthday dance, and Nathan struggles with Allie growing up. Rosemary and Bill team up again to investigate a train robbery. Lucas lends Edie a hand.

Elizabeth develops a new method of teaching. Nathan goes undercover. A familiar face returns to Hope Valley with an unlucky heiress in tow. Lucas and Lee face their differences.

Allie and Oliver discover a threat. Rosemary invites the kids to debate Lucas on the radio. Bill interrogates a suspect with an old friend's help. Elizabeth fights a cold.