Two strangers ask Mark for help with a mysterious villain. Elsewhere in the galaxy, Nolan grapples with his identity and Allen finds a surprising new ally.

Mark takes a stand, unaware of the ramifications for his family, the GDA, and even the Guardians. Cecil remembers his past and Eve makes an important decision.

A powerful new figure challenges Mark's idea of what's right and what's wrong. Rae approaches Rex with a big life decision.

Mark struggles to teach Oliver what it means to be a superhero. Debbie explores a new relationship and a changed family dynamic.

Mark Grayson is back and stronger than ever – with new enemies out for blood and old villains out for revenge.

Mark and Eve start a business and encounter a familiar face. Debbie worries that Oliver's growing up too quickly.

Earth's greatest heroes join forces to fight an unimaginable threat.

With the world still reeling, a dangerous stranger arrives - testing Mark to his limits and beyond.