Starfire- Mission Dark Sky

Disclaimer- I don't own Percy Jackson or Avengers
Censored cursing for anyone who cares
Direct sequel to Bridge Between Two Worlds

Cass Stark has had an interesting summer, to say the least. Sadly, all good things must come to a close, and now, it's back to the boring monotony of school. But when Fury calls on her to deal with the shadow-wielding HYDRA assassin codenamed Dark Sky, will she be able to help the other girl see the light?