Ep 20. Coldhearted

In Young Justice season 1 episode 20, titled "Coldhearted," the team faces their toughest challenge yet when they must take on the villainous Mr. Freeze. As they investigate a string of robberies involving frozen diamonds, the team realizes they are dealing with a powerful and dangerous adversary.

At the same time, tensions arise within the team as Robin and Artemis clash over their leadership styles. With Batman away on a mission, Robin takes charge and asserts his authority over the team. However, Artemis challenges his decisions and the two begin to butt heads.

As the team continues to pursue Mr. Freeze, they learn more about his tragic past and the motivations behind his criminal actions. Meanwhile, Robin and Artemis must put aside their differences and work together to save their teammates when they are caught in Mr. Freeze's icy trap.

The episode showcases the strengths and weaknesses of the individual team members, as well as the importance of teamwork and trust. With high stakes and intense action, "Coldhearted" is a thrilling and emotional episode that will keep viewers on the edge of their seats.