London, 1865

Vera Sorokina loves reading the Penny Dreadfuls and immersing herself in tales of adventure, mystery, and romance. Her own days are filled with the often mundane work of running the book and print shop she owns with her father. The shop offers her the freedom and income to employ and protect the poverty-stricken Londoners she's come to care about, and it gives her father something to do other than long for their hometown of St. Petersburg. She is grateful for the stability in their lives, but she often feels lonely.

Brogan Donnelly was born and raised in Ireland, but has lived in London for several years, where he's built a career as a Penny Dreadful writer. He has dedicated himself to the plight of the poor with the help of his sister. His membership in the secretive Dread Penny Society allows him to feel he isn't entirely wasting his life, yet he feels dissatisfied. With no one to share his life with but his sister, he fears London will never truly feel like home.

Brogan and Vera's paths cross, and the attraction is both immediate and ill-advised. Vera knows from past experience that writers are never to be trusted, and Brogan has reason to suspect not everything at her print shop is aboveboard. When the growing criminal enterprise run by the elusive and violent Mastiff begins targeting their area of London, Brogan and Vera must work together to protect the community they've both grown to love. But that means they'll need to learn to trust each other with dangerous secrets that have followed both of them from their home countries.