A Brane of Extraordinary Women

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Title: A Brane of Extraordinary Women
Author(s): Diane Castle
Date(s): 2011-
Length: Over 1.5 million words
Genre: gen
Fandom: Harry Potter, Stargate SG-1, Buffy,Batman, The Bionic Woman, The Secret World of Alex Mack
External Links: Series Overview and Stories on Twisting the Hellmouth,

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Spoiler Warning: This article or section may contain spoilers. If this bothers you, proceed with caution.

A Brane of Extraordinary Women is a massive action-orientated multi-fandom crossover series by Diane Castle, published on Twisting the Hellmouth, which has now extended to six stories with a total length over three million words.[1] It has its own fandom with fanfic, fan art, etc.

The ratings of the stories range from FR13 to FR15 (minor sexual content); relationships shown are either canon for the different series in the crossover or het.


In the first story, The League of Extraordinary Women (2011–12), demonic invaders start to open dimensional portals and attack several worlds, most notably the post-series Harry Potter and Buffy universes. A prophecy leads Hermione Granger to visit the other worlds of the story and recruit a team of women who will be able to end the threat; herself, Samantha Carter (Stargate SG-1), Buffy Summers and Willow Rosenberg (Buffy), Selina Kyle[2] (Catwoman), Jamie Somers (The Bionic Woman), and Alex Mack (The Secret World of Alex Mack). A complication is that the different universes have different natural laws, to some extent; most notably, magic will only work in some of the worlds once the dimensional invasion ends. Working together and with some support from other characters from their universes such as Xander Harris, Batman, and Faith Lehane they are eventually able to overcome the threat, and the team members eventually return to their own universes.

The second story, Cross Purposes (2012–16), sees the members of the team looking for their world's versions of their other teammates. Usually they seem to have similar histories, but there are often surprises. For example, Hermione finds that her world's Willow is a magical drop-out, the Stargate world's Buffy is a ruthless secret agent, the Batman universe Buffy appears to be a gold-digger but has a secret agenda. It's essentially several separate narratives covering most of the universes and characters, with a few exceptions; most notably the "Alex Mack" universe is omitted since it's covered by the next story.

The third story and by far the longest is The Secret Return of Alex Mack (2012–14). On returning to her own world teenage superheroine Alex sets out to make the best possible use of her relatively low level powers (most notably flight, lightning, and telekinesis) and becomes a globally known superheroine, adopting the pseudonym Terawatt. She tracks down the contacts she's made in the first story and finds her world's equivalents - some useful, others not - and in the process of developing her potential uncovers a global threat, a conspiracy to destroy most of the human race, using mutants and bioengineered and chemically triggered monsters. This takes in dozens of additional fandoms, mostly providing additional characters and/or monsters and enemies, and is more than a million words in its own right. All of the works by other authors derive from this story, and it has its own TV Tropes page.

The fourth is a prequel, Hermione Granger and the Boy Who Lived (2014–16), a "mundane" version of the Harry Potter story set in the "Alex Mack" universe where there is no magic. "Harworts School" is secretly run by factions of British Intelligence, and its students are taught spycraft and have to unravel the remnants of old conspiracies dating back to the Second World War.

The fifth is The Secret Collocation of Alex Mack (2016-2018), which introduces parallel world versions of Alex and makes occasional references to characters etc. introduced to this universe by other authors.

The sixth is Cross Purposes 2 (2018- WIP) which continues events in all of these universes after the events of Secret Collocation, again mentioning characters and events introduced by other authors.

Reactions and Reviews

The series has been very positively received on Twisting the Hellmouth, with 724 recommendations and more than twelve thousand reviews; The Secret Return of Alex Mack has 55 spin-off stories by eleven authors plus art work etc., is rated the third highest story on the site by number of recommendations, and first for number of reviews (all as of September 2016).

The series has its own TV Tropes page and an ongoing discussion thread on Spacebattles Forums.



  1. ^ As of February 2019
  2. ^ Based on the version seen in Chris Dee's Cat Tales fanfic series.