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Thriller · 2006 · PG-13

Marker

by Robin Cook

A serial killer is operating inside a hospital — and the weapon is undetectable

For14+GenreThrillerLength388 pagesRead time~10 hours

This analysis was generated by AI from publicly available reader reviews, literary criticism, and book discussions. It has not been verified by a BookLens community reviewer and may contain errors. Be the first to verify →

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What's in this book, at a glance — five things readers want to know before they start.

Violence

Some

Multiple murders in hospital settings; investigation violence

Language

Some

Moderate profanity

Sexual Content

Barely any

Brief sexual content

Substance Use

Barely any

Moderate alcohol use

Emotional Intensity

Some

Hospital as hunting ground; undetectable murder weapon creates high dread

What this book is about

A Robin Cook medical thriller (2005) in which Dr. Jack Stapleton investigates a series of deaths in New York City hospitals that appear natural but are actually deliberate. The killer is using a rare and undetectable substance, making the investigation extraordinarily difficult. Features Stapleton's tenacious medical examiner work against a methodical hospital-based murderer.

Notes for sensitive readers

Reader-flagged moments and themes that may affect your experience.

Serial murder in hospitals

Medical body horror elements

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