The Demon's Weakness (Prometheus #2)

"There is always some madness in love. But there is always some reason in madness". Friedrich Nietzsche.

By the end of the 19th century, science was advancing by leaps and bounds, often beyond the bounds of ethics and proper methodology. The Prometheus project had crossed every line, and now its creator would face the consequences.
Lord Marcus Cavendish was one of them. Teetering on the edge of the abyss, he walked the razor's edge between sanity and madness. Only one purpose kept him making his torturer and accomplices pay. Among them, his father. Returning home meant opening the gates of hell and being willing to burn in its flames.
But he never expected to find those flames so tempting.
Lady Irina, his sister-in-law, found herself trapped in this nightmare. Married to a cruel man, she remained intact thanks to a single saving her son Gunnar from becoming a monster. And for that, she was willing to do anything, even ally herself with her brother-in-law... even strike a bargain with the devil.
Discover it in "The Demon's Weakness," the second installment of the Prometheus series.

Warning: this story contains dark content, its characters are morally gray, and there is no redemption.