At work, she’s a renowned assassin. At home, she’s a single mom to a teenage daughter. Killing? That’s easy. It’s parenting that’s the hard part.

Tragedy, betrayal and a mysterious discovery fuel a woman’s vengeance for the loss of her tribe and family in this special episode of “Kingdom.”

Stagnant since 1903, at an elevation of 2,744 m, a volcano erupts on Baekdu Mountain located on the Chinese-North Korean border. Armed with the threat of imminent eruptions, a team…