Super Short Summary

The Coworker by Freida McFadden is a psychological thriller about the mysterious disappearance of Dawn Schiff, an accountant at a nutritional supplement company, reported missing by her coworker Natalie Farrell. As the investigation intensifies and reveals disturbing office dynamics, suspicion shifts onto Natalie, blurring the lines between victim and perpetrator. The book contains descriptions of self-harm and death by suicide.