Sin is the (often anxious) brain behind the pen names of Kat Sinclair, Ripley Sinclair, and Quinn Sinclair. Born in the Czech Republic and later relocating to the UK for love, she often loses herself in her own inner worlds, as well as the ones on the screen. Besides falling in love with fictional characters, she also enjoys spending time with her beloved animals, gaming, doing DIY projects, and learning new scientific facts.

In her stories, she loves to focus on complex, flawed characters; be it through stories of pure romance, of fantasy, urban fantasy, or some mixture of the three.