Country music singer-songwriter Dolly Parton discusses the origins of 1978 song "It's All Wrong But It's All Right," the seventh track to crossover.

Country music singer-songwriter Dolly Parton discusses the origins of 1980 song "9 to 5," a track she wrote for comedy film "Nine to Five."

Country music singer-songwriter Dolly Parton discusses the origins of 2005 song "Travelin' Thru," a track written for independent film "Transamerica,"

While telling the stories behind "Strong Enough," "If It Makes You Happy" and others, the Grammy-winning folk, roots-rock star shares how they changed her life.

Louisa anxiously awaits her interview at school; Bert decides to use villagers as culinary test subjects; Martin makes a discovery regarding a skin infection.

Martin finds himself in a difficult dilemma when Mark Mylow's naturopath sister returns to Portwenn and starts selling her natural remedies.

Martin tries to help a local radio host, who is becoming addicted to alcohol and prescription drugs, but the stubborn woman refuses his assistance.

Helen Pratt passes away in her home, leading her husband Phil to blame Martin for her death; Phil starts using pesticides near aunt Joan's land.

When Dr. Ellingham's parents arrive for an unexpected visit, the townspeople are enchanted by the affable and charismatic nature of Martin's father.

Just before getting married, a groomsman heads into the forest for a pre-wedding camping trip, but the adventure is plagued by bad luck.

When a new DCI arrives in Midsomer and a local DJ is crushed to death at a traditional girls' boarding school, he learns the village isn't so quaint.

The murder of a social services investigator brings the eccentric lives of a reclusive elderly couple under police scrutiny; astronomical charts hold clues.

After the owner of a seafood company is murdered, Detective Charlie and his partner, Rex search for the killer and interrogate the owner's ex-employee.

After Rex is blamed for injuring a retired police officer, he is suspended from the force; Charlie decides to evaluate the retired officer's accusations.

A farmer arrives in Athens in search of her father to find her half-sister, and the two begin solving crimes together as they look for their father.

Charlie and Rex investigate the long list of enemies surrounding a vitriolic celebrity chef after a finger turns up in his Beef Wellington.

Charlie is unable to let a serial arsonist case rest, and while working from his bed, he hopes to identify the arsonist before he strikes again.