Written by JOSS WHEDON. Penciled by JOHN CASSADAY. Cover by JOHN CASSADAY. They're back! The chart-topping super-team of Joss Whedon and John Cassaday return for more Astonshing X-Men! If you thought their past efforts were full of shocks and surprises, hold onto your eyeballs - because you haven't seen anything yet, as things go from peculiar to just plain bizarre! Emma Frost's erratic behavior has the X-Men spinning in a non-stop downward spiral. Will an unlikely union be the final straw? After secretly lying in wait for months, the new Hellfire Club makes its move! Plus: The X-Man destined to destroy the Breakworld stands revealed! Who is it, and what will be their fate? Collecting ASTONISHING X-MEN #13-18. 152 PGS.