Each episode of HBO’s “Game of Thrones” opens with warnings of graphic adult material, violence, sexual content and nudity. If these items are not sufficient encouragement to view the full eight seasons, the 73 episodes also offer lessons about risk. Two risk managers are particularly worth mentioning.

Cersei, self-crowned Queen of the Seven Kingdoms, survives one potential disaster after another as she manipulates, tortures, poisons or beheads those who threaten her.

Daenerys, Khaleesi (i.e., queen) of the Dothraki, displays equal skill as she competes with Cersei and a host of others to sit on the Iron Throne.