Elizabeth struggles to get along with Jack's mother, a gritty and challenging frontierswoman, after she rides into town in the night.

Elizabeth’s sister, Julie, visits Hope Valley in her quest to become a teacher. Lee is made acting Sheriff when Abigail and Bill leave town to testify in Gowen’s trial. Carson has problems with a traveling tonic salesman.

When Little Jack falls ill, Elizabeth and Nathan care for him together as Hickam and Mei race to secure medicine. The kids broadcast a baseball game over the radio to lift spirits.

Bill locates the missing witness from Gowen's case. Ray Wyatt's young nephews start school -- and trouble. A new commissary threatens Abigail's Cafe.

Helped by Jack, Bill investigates the mine explosion, while Elizabeth must decide whether to accept a job offer back East or remain in Coal Valley.

As graduation approaches, Elizabeth and Nathan plan for a happy summer together. Lucas and Edie race Rosemary and Bill to find the gold. The town plans a sweet surprise for Minnie.

Jack and Elizabeth's reunion is threatened by the appearance of a woman from Jack's past. Abigail welcomes forensics investigator Bill Avery to town.

Coal Valley's trial gets underway in the town with a new Judge presiding over it. Elizabeth gets unsettling news from Hamilton regarding her family, and must return. Abigail's case is presided over by an unlikely prosecutor. Elizabeth's family meets, Jack.

Elizabeth and Jack receive upsetting news from their families in Hamilton that could tear them apart. Meanwhile, Abigail tries to find forgiveness in her heart for Bill as Lee enlists Rosemary’s help to fight Gowen and keep Hope Valley from falling apart.

A new railroad route that could boost business is proposed. A baseball game helps the newer settlement students to make friends with the other pupils.

Elizabeth must coax the truth from Robert after he tells a lie about seeing a bear and becomes the town hero.

Elizabeth struggles with growing pains at the school. An old friend comes to visit Jack. Abigail's tenure as mayor is threatened. Rosemary plays matchmaker.

Eager to start her life anew, Abigail concocts a bold but costly business proposition, while Elizabeth and Jack go to bat for a struggling student.

Elizabeth's visiting sister causes a stir when she brings a wounded man to town, while Jack invites Elizabeth to a romantic dinner at Abigail's café.

Elizabeth and Jack face a life-threatening experience together and finally discover the truth about what has been keeping them apart. Later, all of Hope Valley witnesses a shocking arrest and an unexpected proposal.

To raise money for new school supplies, Elizabeth and the kids throw a carnival; the carnival sheds new light and possibly even hope, on Phillip's relationship with his distant father.

Elizabeth fights to clear her name and get her job back. Jack gets some troubling news. Wyatt and the railroad continue to make problems for Hope Valley. The children have to deal with a stern new schoolteacher.

A surprising ally helps Elizabeth in her fight to get her job back. Jack does some soul-searching that may affect his relationship with Elizabeth.

A stranger's visit sheds light on Carson's mysterious past. Elizabeth gets a taste of parenthood after volunteering to baby-sit Opal for a few days.

When Carson disagrees with a doctor's opinion of Cody's sudden illness, Abigail must decide whom she trusts more and which course of action to take.

Elizabeth hears news about her book. Lee gets a surprise that stirs up wounds from his past. Fiona tries to find a way to stay in Hope Valley. Lucas makes a last-ditch effort to preserve his partnership in Gowen Petroleum.

Jack questions Cat about the fire after finding whale oil cans in her shed, while Elizabeth is baffled when a poor student gives her a costly gift.

The arrival of new miners in Coal Valley creates excitement among the townswomen, but Jack regards Billy, Elizabeth's earnest suitor, with suspicion.

As the town readies for the Miners' Games, Elizabeth and Billy's courtship heats up, and Jack investigates some thefts he suspects Billy is behind.

Adam, the mine disaster's sole survivor, finally returns home but struggles to readjust. On short notice, Elizabeth puts on the Founders' Day play.