Astonishing X-Men: Mystique, Vol. 4 - Quiet

The mysterious Quiet Man's identity is finally revealed! Mystique is sent on a mission to find Shortpack, who has mysteriously vanished. But she has enough on her mind already: she has to figure out how to assassinate Professor Charles Xavier! Mystique has been caught between two masters long enough; now, the time has come when she can no longer serve both! Collects Mystique #19-24.