Judging by parentheses in title, possibly this book needs to be in a series. "The Mad Goblin (Secrets of the Nine #3 - Wold Newton Parallel Universe) "

[Debbie's Spurts (D.A.)]

The Mad Goblin has a title saying "The Mad Goblin (Secrets of the Nine #3 - Wold Newton Parallel Universe)".

Not familiar with series myself, just sorting thru some newish releases.

[lafon حمزة]

Yeah. They are a series. No idea how they fit into the larger universe though.