Portia Da Costa 
Gemini Heat [EPUB ebook] 

As the metropolis sizzles in early summer temperatures, identical twin sisters Deana and Delia Ferraro are cooking up a heatwave of their own. Surrounded by an atmosphere of relentless humidity, Deanna and Delia find themselves rivals for the attentions of Jackson de Guile — a wealthy entrepreneur and master of power dynamics — who draws them both into a web of luxurious debauchery. Their erotic encounters become increasingly bizarre as Deanna and her twin vie for the rewards that pleasuring him brings them…