This collection presents twenty-nine tales of the uncanny and the bizarre, each originally featured in the pages of the Strand Magazine. The anthology gathers diverse narratives where protagonists confront inexplicable phenomena, ranging from global catastrophes to personal hauntings. These stories operate within the constraints of early twentieth-century realism, often introducing a single, jarring supernatural or speculative element to disrupt the mundane lives of the characters. The framework is episodic, allowing each author to explore distinct manifestations of madness, revenge, and the unknown through varied narrative voices.

Discussion often centers on the historical significance of these stories as artifacts of early twentieth-century popular fiction. Readers frequently highlight the contrast between the refined prose styles of authors like Graham Greene or D.H. Lawrence and the pulp-adjacent nature of the horror themes. The collection is noted for its effective preservation of the specific atmosphere that defined the Strand Magazine during its peak. Critics often point to the variety of the selections as a primary strength, noting that the anthology avoids repetitive tropes by shifting between psychological horror and speculative science fiction. The balance between well-known literary giants and lesser-known contributors provides a comprehensive view of the era's fascination with the uncanny.