Cash Chronicle: The Mutation Legation - a steampunk alternate history novella by James Monticone

Cash Chronicles: The Mutation Legation Kindle
http://www.amazon.com/Cash-Chronicles-Mutation-James-Monticone-ebook/dp/B01EEKFW22

The prequel to the Cash Chronicles book series, this standalone novella takes place at the Texas legation in London in 1844, in a world where the Americas are swarming with mutants.  The rest of the world wants to know if they should be worried, and diplomats have gathered to talk about it.  But cooler heads do not prevail, and when mutants crash the meeting, there's a series of mysterious murders and it all ends with a duel!