An unnatural terror invades our reality, preying on the dreams of its victims, in this darkly captivating novel set in the world of Arkham Horror.

Professor Miranda Ventham has bad dreams - nothing new in 1920s Arkham - but hers are horrifying glimpses of a dark future. Seriously ill, she books herself into the new sanatorium, Stroud Home. With any luck, the city's terror won't reach her there.

And yet the nightmares get worse. Aided by her friend Agatha Crane, they delve into the background of the sanatorium's enigmatic director, Donovan Stroud. Plagued by doubts, delusions and terrifying visions, Miranda must unravel the Strouds' history before she becomes trapped in a nightmare. There is something sinister lurking in his heart, and it longs to be set free.