Elizabeth worries about her relationship with Lucas, while Bill helps Gowen through the fallout of the mine explosion. Rosemary and Lee receive some news.

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.

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.

When a powerful divorce attorney who only represented women is murdered, Castle and Beckett are confronted with a plethora of angry ex-husbands, any one of whom could be the murderer….

In the 14th-season opener, 12 couples perform either the fox-trot or the cha-cha. Competitors include Gladys Knight, Melissa Gilbert, Jack Wagner, Donald Driver, Martina Navratilova and Gavin DeGraw.