Turn-of-the-Century Toughs is a cycle of historical fantasy novels by Dusk Peterson about disreputable men on the margins of society, and the men and women who love them. The novels are set in a world based on the late Victorian and Edwardian Eras.
The cycle is made up of four novel series: The Eternal Dungeon, Life Prison, Michael's House, and Waterman. As the titles suggest, the first two series are set in prisons. The third is set in a house of male prostitution. The fourth series (which includes science fiction elements), is set primarily in two locations: a 1910s-style boarding school and a futuristic prison.
The setting for the cycle ("the Midcoast nations") is inspired by the geography and history of the Mid-Atlantic region of the United States of America. Waterman is inspired by historical events in the Maryland region of the Chesapeake Bay.
The stories focus primarily on male friendship and gay romance, although friendship and romance between men and women play a small role in the tales.
Stories in the series Michael's House have been serialized by the gay erotic romance magazine MAS-Zine, which has also published two stories from the Eternal Dungeon series. Novels and short stories from the cycle are published as e-books, with online previews.