The Hollow Cabal

Publisher's blurb:

After discovering that a sinister force has infiltrated the Stewards, the heroes travel to the floating bubble city of Roselight, in the clouds of the gas giant Liavara, to warn members of the law-enforcement agency! As the heroes navigate the seedy underbelly of this pristine metropolis, they learn that their enemies are fighting a battle of their own against another malevolent faction of mind-controlling aliens. If the heroes want answers, they will have to figure out who to trust in a time where no one is what they seem!