All That Glitters by Elizabeth McCoy
Series: Lord Alchemist.
Approx. 94,590 words.
Published on September 21, 2012.
Jani, hired to blackmail the Lord Alchemist into disinheriting his "mongrel" heir, Iontho, mistakes said heir for a servant - and Iontho poses as her alchemically-bound minion to uncover her mysterious employer. The travel's wretched, but the company's better than either'd hoped, and young hormones are fully engaged - but can youth and unexpected skills defeat age and treachery?