Warning: There are spoilers ahead for Invincible episode 4!
Mark Grayson has only been a superhero for a few weeks, but there’s still a lot he has to learn in Invincible. At this point, Mark doesn’t even realize that his father, Nolan Grayson/Omni-Man, is a killer. But the demon detective, Damien Darkblood, knows…and that information is going to cost him. Amazon Prime has premiered the fourth…
