"When the Devil Daydreams, Part One"
This story takes place between pages 21 and 22 of Ghost (1998) #9.
Margo only appears in the present-time first page framing sequence.
*Sharp-eyed readers noticed that at the end of Ghost #9, she had spent two days lost in Hell before arriving inside the Vortex complex. Now the story of those missing days can be told as Ghost battles the demon Nemo for the soul of a young girl lost in his realm. Bullets fly and demons fry! *Source: darkhorse.com