Edinburgh, 1849. A terrifying wave of unexplained deaths sweeps through the city, leaving doctors baffled and their remedies powerless. Amidst the growing panic, a whispering campaign seeks to tarnish the reputation of Dr. James Simpson, the pioneering medical chloroformist, painting him as a murderer.

Determined to clear Simpson's name, his brilliant protégé Will Raven and the astute former housemaid Sarah Fisher must plunge into Edinburgh’s darkest and deadliest streets. As they navigate the city's underbelly, they soon uncover a chilling truth: the cause of these deaths has eluded detection precisely because it is so utterly unthinkable.

Why You Should Read?

• Immerse yourself in a vividly rendered, historically rich Victorian Edinburgh setting.
• Unravel a complex and gripping medical mystery that challenges conventional understanding.
• Follow the compelling investigative partnership of Will Raven and Sarah Fisher.
• Explore the intriguing, often brutal, world of 19th-century medicine and societal secrets.