Krysten Ritter is Jessica Jones
Jessica Jones, one of the four Marvel/Netflix mini-series now has its lead in Krysten Ritter. Ritter will be familiar to fans of Breaking Bad in which she played Jesse's girlfriend Jane Margolis.
It's also been reported that Mike Colter has picked up the lead for the Luke Cage series, but he'll be making his first appearance in the role as part of the Jessica Jones storyline.
Jessica Jones is the story of a former superhero who is suffering from PTSD and who goes on to set up a detective agency in order to help continue her fight against crime. In addition to Jessica Jones and Luke Cage, Marvel and Netflix are working on mini-series adaptations of Daredevil and Iron Fist followed by a final mash-up mini-series featuring all four in The Defenders