After losing the family fortune to a fraudulent psychic, inventor Henry Strauss is determined to bring the otherworld under control through the application of science. All he needs is a genuine haunting to prove his Electro-Séance will work. A letter from wealthy industrialist Dominic Gladfield seems the answer to his prayers. Gladfield’s proposition: a contest pitting science against spiritualism, with a hefty prize for the winner. The contest takes Henry to Reyhome Castle, the site of a series of brutal murders decades earlier.

Psychic medium Vincent Night and his lover, Henry Strauss, have spent months striving to uncover the dark secret harbored by Vincent’s dead mentor, James Dunne. Their only clue comes from a journal: Dunne was seeking to restore the Grand Harmonium, an artifact meant to breach the walls between life and death. Fate seems to intervene when Henry and Vincent are offered a job investigating the haunted orphanage where Dunne lived as a youth. But the ghosts of the orphanage don’t rest easily....

Whyborne’s Endicott relatives have returned to collect on the promise he made to help them take back their ancestral manor from an evil cult. In exchange, they’ll give him the key to deciphering the Wisborg Codex, which Whyborne needs to learn how to stop the masters. To that end, Whyborne, his husband Griffin, and their friends Iskander and Christine travel to a small island off the coast of Cornwall. But when they arrive at Balefire Manor, Whyborne must not only face the evil within the ancient mansion, but the painful truth about his own destiny.

On the return voyage from Balefire Manor, Whyborne receives the worst news possible: Widdershins has fallen before the onslaught of the Fideles and their servants. There’s still time to stop the return of the Masters, but that window grows shorter by the hour. Together with Christine and Iskander, Whyborne and Griffin must reach Widdershins to face the ultimate test and decide the fate of the world, once and for all.

Caleb has spent the last six months adjusting to life possessed by the vampire spirit Gray and hunting demons with their boyfriend, federal exorcist John Starkweather. Unfortunately, the other agents of SPECTR view Caleb and Gray as a ticking time bomb. Their frustration mounts as the new district chief puts more and more restrictions on them. John wants to help, but he has problems of his own. Charleston is in the grip of an outbreak of demon possession, and the human members of SPECTR have been pushed to the brink.

Detective Bill Quigley fell in love with the familiar Isaac the night they met. But after more than two years, it’s time to admit to himself that Isaac doesn’t return his feelings. Isaac knows he’s too broken by his experiences for anyone to fall in love with. Especially someone like Bill, who deserves a partner unplagued by Isaac’s nightmares and doubts. When children go missing from an orphanage, Bill and Isaac must work together to find them. And as years of yearning threaten to ignite into passion, they must decide once and for all whether to take a chance on love.

Sorcerer Percival Endicott Whyborne and his husband, Griffin Flaherty, have enjoyed an unprecedented stretch of peace and quiet. Unfortunately, the calm is shattered by the arrival of a package from Griffin's brother, Jack, who has uncovered a strange artifact while digging for gold in Alaska. The discovery of a previously unknown civilization could revive the career of their friend, Dr. Christine Putnam, or it might kill them all if the hints of dark sorcery surrounding the find are true.

Will Darling came back from the Great War with a few scars, a lot of medals, and no idea what to do next. Inheriting his uncle's chaotic secondhand bookshop is a blessing...until strange visitors start making threats. First a criminal gang, then the War Office, both telling Will to give them the information they want, or else. Will has no idea what that information is, and nobody to turn to, until Kim Secretan - charming, cultured, oddly attractive - steps in to offer help. As Kim and Will try to find answers and outrun trouble, mutual desire grows along with the danger.  

Widdershins has been unusually quiet for months. But now a mysterious creature from the Outside is on the loose, assassinating members of the town's old families by draining their blood. Whyborne and Griffin set out to solve the mystery -- but as the evidence piles up, the police begin to suspect Whyborne himself is the murderer.

Introverted scholar Percival Endicott Whyborne wants nothing more than to live quietly with his lover, ex-Pinkerton detective Griffin Flaherty. Unfortunately, Whyborne's railroad tycoon father has other ideas, namely hiring Griffin to investigate mysterious events at a coal mine. Whyborne, Griffin, and their friend Christine travel to Threshold Mountain, a place of dark legend even before the mine burrowed into its heart.

Between his bullying father and dissolute brother, Percival Endicott Whyborne has quite enough problematic family members to deal with. So when his sister returns to Widdershins asking for help solving the mystery of a derelict ship, Whyborne is reluctant to get involved. Until, that is, a brutal murderer strikes, leaving Whyborne and his lover Griffin no choice but to take the case. The investigation leads them deep into a conspiracy of blackmail, murder, and darkest sorcery.

With the justiciary understaffed, a series of horrifying occult murders to be investigated, and a young student who is flying - literally - off the rails, magical law enforcer Stephen Day is under increasing stress. And his relationship with his aristocratic lover, Lord Crane, is beginning to feel the strain. Crane chafes at the restrictions of England's laws, and there's a worrying development in the blood-and-sex bond he shares with Stephen. A development that makes a sensible man question if they should be together at all.

Fox shifter Malachi steals for one of the biggest crime rings in New York City. But when he witnesses the murder of a millionaire, the only person who can keep him safe is Dr. Owen Yates, forensic hexman for the Metropolitan Witch Police - and Malachi's witch.

Whyborne's lover, dashing ex-Pinkerton detective Griffin Flaherty, agrees to prove Allan's innocence. But when Allan is deemed insane and locked away in the Stormhaven Lunatic Asylum, Griffin finds himself reliving the horrifying memories of his own ordeal inside a madhouse.

When Griffin's past collides with his present, will it cost the lives of everyone he loves? Between the threat of a world-ending invasion from the Outside and unwelcome revelations about his own nature, Percival Endicott Whyborne is under a great deal of strain. His husband, Griffin Flaherty, wants to help - but how can he, when Whyborne won't tell him what's wrong?