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.

Elizabeth and Nathan's date night leads to an undercover operation at a glamorous party. Lucas and Edie grow closer over cards. Rosemary holds auditions for a play.

Rosemary's play gets a new venue and a new cast. Elizabeth takes her curriculum to the airwaves. Faith helps a friend make a decision. Lucas faces unexpected opposition.

The Garrison Gang comes for their gold with Hope Valley residents in the crosshairs. Angela visits the Schwartzman School and Rosemary uncovers the truth about Ava.