Old tensions and buried feelings emerge when Mel and Jack's pre-wedding parties get a little rowdy. Lizzie and Denny are uncertain about their future.

Mel seeks medical care, with a nervous Jack by her side. Hope's confusion puts Doc in a tough position. A new doctor joins the practice.

Jack makes a momentous decision as Mel grapples with how to share surprising news. Doc is plagued with concern. Preacher meets with Paige's friend.

Joey arrives with some shocking news that has Mel questioning her sister's judgment. Jack brainstorms a new revenue stream.

Charmaine asks Jack for support at the baby shower. Mel has a tough conversation with Cassandra. Preacher worries about Christopher after their call.

Mel and Jack finally receive the results they've been waiting on. Lizzie organizes a send-off for Ricky before speaking to Denny about his secret.

After Hope and friends sew the costumes, Lizzie and Ricky rehearse for the Renaissance Fair. Brie and Mike team up to investigate who paid Brady's bond.

After finding an abandoned baby on Doc Mullins's doorstep, Mel and her boss argue over whether to call Social Services or find the newborn's mother.

Jack asks Mel for help when Charmaine experiences a complication in her pregnancy. Hope insists that Doc keep their relationship a secret.

The town attends the annual picnic where residents engage in friendly competition, romantic tiffs and —as far as Mel is concerned — too much gossip

Mel grapples with how to honor Mark ahead of the anniversary of his death. Jack's stress leads him to bad decisions. Hope apologizes with pie.

When police find a body in the woods, Preacher worries about the implications. Charmaine and Jack work on a birth plan with Mel.

Shocking news and unexpected gifts are in store on Christmas Eve as couples and families come together despite their differences.

Despite Mel's efforts, Charmaine's stay at Hope's house gets off to a rocky start. A situation involving Paige's past intensifies unexpectedly.

Mel endeavors to help an uncooperative Charmaine get hydrated while thinking about what transpired with Jack. Calvin offers Brady a new job.

While Jack helps Mike zero in on Calvin, Mel and Doc investigate a mysterious outbreak that could be related to food poisoning. Hope learns a secret.

Mel searches desperately for Jack, who has stumbled upon disturbing news. Jamie makes Preacher an enticing job offer. Hope questions Doc's loyalty.

Mel tracks down Brady to find out more about Spencer. Hope answers Doc's question. Preacher makes a life-changing decision.

Lily divulges a devastating secret to Mel. Brie gets to know Brady better and admits something to Jack. Lizzie's ex surprises her.

Doc and Mel help Christopher and Preacher with a medical emergency. After an angry confrontation, Jack focuses his energy on a romantic gesture.

Mel is taken aback by Doc's news after they interview a new doctor. To Jack's chagrin, Todd makes a bold request. Lily makes a difficult revelation.

Jack and Mel argue about their relationship and their future while competing in the Lumberjack Games. Brie opens up about her painful breakup.

Jack meets with a custody attorney and his stress begins to overwhelm him. Brady gets brought in for questioning. Muriel offers Doc advice.

Heartbroken, Mel heads to LA to support Joey at her divorce hearing. More of Jack's memories return. Lily asks her friends to care for her children.

The town says goodbye to a dear friend. Brie suffers a loss of her own. Mel and Jack discuss what should happen with their relationship.