As the Great War drags on, German Uboats prowl the North Atlantic, torpedoing military and civilian vessels alike. When a shipwrecked man is recovered at sea, he tells a strange and disturbing tale of his experience on a German submarine. Has the experience driven him mad, or did his voyage reveal unseen monstrosities at the bottom of the ocean?

LONDON, 1891. Elizabeth Whittle and William Grant enjoy scalping London’s bourgeoisie, taking on the personas of grand spiritist Cerulia Trent and her agent to connect the living and the dead. When a detective arrives, sniffing out fraud with a scientifically minded spiritualist society, the duo decides to take one last job before escaping to the continent. However, their final séance ends horrifically … and soon Lizzie isn’t Lizzie anymore.

Archeologist Nathaniel Ward returns to the Isle of Wight and recalls a strange incident from his younger days. While viewing Roman ruins on a local estate he's invited to stay for a wedding. Ward uncovers an unusual Roman artifact. Will the discovery prove auspicious for the young couple, or will it unleash a strange and terrible wrath?

The Necronomicon was not the first book by H.P. Lovecraft to terrify readers with tales of dark and twisted horrors from beyond. No, the Al-Azif, or Book of the Insect, is the first work that told mankind of Cthulhu, Azathoth, and other terrors. Indeed, it was the book that inspired "The Mad Arab" Abdul Al-Hazred to write its more famous successor.

Dark Adventure Radio Theatre presents Robert E. Howard's tale of horrors in Eastern Europe in a 1930s-style radio drama. Charlie Tower seeks refuge from the horrors of the Great War in Berlin's most notorious nightclubs. There a chain of events is set in motion that will lead him across Europe to investigate the mysterious Black Stone. Is it merely a creation of superstitious peasants, or is it a nexus for hideous gods of the ancient world to set foot into ours?

On picturesque College Hill in Providence, Rhode Island, an old colonial house has sat empty for decades. No one would consider renting the house with its long history of woes and unexplained deaths. Can a young man and his elderly great-uncle get to the bottom of the unspeakable causes of the house's affliction? Or will their investigation bring them face to face with an enduring evil?

The police inspector who once probed the mysteries of the Cthulhu cult now finds himself on a case that leads him once again into the foreboding bayous of Louisana. Will his investigations pit him against deranged cultists, the abominations they worship, or something even more evil and insidious?

A strange case of amnesia strikes down a university professor: Five years of his life vanish under a mysterious cloud. He recovers and embarks on an investigation to piece together his strange activities and nefarious associations while afflicted.

When Arkham Advertiser reporter Andy van Nortwick receives a mysterious film reel in the mail, with a simple note: "Maude Brion is very much alive!", he steps onto a path which will lead him to the brink of madness. Brion, the famous actress and film director, vanished a year ago on an ill-fated expedition into the Amazon rainforest, delving into the legend of the Spider Queen. Thrilled by the prospect of his big break, Nortwick swings the funds to launch a rescue mission. He gathers a team of explorers and a keen folklorist to bring back Brion and cement his reputation.

When dissolute fisherman Abel Davenport discovers an ancient temple in the deep ocean, he under the influence of a long dead god. In his attempts to restore the god's cult, Abel unleashes a plague of twisted doppelgangers on Arkham. Horrified by the consequences, Davenport realizes that he alone cannot stop the monsters from resurrecting the Ancient One. Sometimes the only way to end one cult is to start another.

In the swirling sewers beneath Arkham, excavators uncover a crystalline formation that hints at dark events from the city's past. As the discovery makes headlines, so too does a series of bizarre murders. With no leads, the Arkham police are always one step behind. Acting on a hunch, down-on-his-luck former journalist Andy Van Nortwick reunites with adventurer Jake Williams and struggling filmmaker Maude Brion to unearth the truth. The trio know of the supernatural horrors that lurk beyond this world, and the reality haunts them.

It is the autumn of 1880, and Dr. John Watson has just returned from Afghanistan. Badly injured and desperate to forget a nightmarish expedition that left him doubting his sanity, Watson is close to destitution when he meets the extraordinary Sherlock Holmes, who is investigating a series of deaths in the Shadwell district of London. Several bodies have been found, the victims appearing to have starved to death over the course of several weeks, and yet they were reported alive and well mere days before.

A meteorite from cosmic space falls to earth on a backwoods Massachusetts farm. The space rock possesses peculiar qualities and mystifies even the brightest university scientists. But it soon becomes clear that this is no ordinary meteor, as its otherworldly influence unleashes a creeping wave of despair, death, and decay into the land and its inhabitants.

Aspiring painter Alden Oakes is invited to join a mysterious art commune in Arkham: the New Colony. When celebrated Spanish surrealist Juan Hugo Balthazarr visits the colony, Alden and the other artists quickly fall under his charismatic spell. Balthazarr throws a string of decadent parties for Arkham’s social elite, conjuring arcane illusions which blur the boundaries between nightmare and reality. Only slowly does Alden come to suspect that Balthazarr’s mock rituals are intended to break through those walls and free what lies beyond. Alden must act, but it might be too late.

Celebrated treasure hunter Count Byron Khun de Prorok leads an expedition into the Libyan Desert in an attempt to find the lost tomb of Alexander the Great at the Temple of Jupiter Ammon. Can the Count succeed where countless others have failed, and recover one of history's greatest archeological finds? Or are some secrets buried with good reason, and those who seek them doomed to be met with madness and disaster?