The Coworker by Freida McFadden (Paperback)

Dawn Schiff works as an accountant at Vixed, a nutritional supplement company, and keeps to herself. She’s awkward, precise, and always at her desk at exactly 8:45 a.m. Her colleagues consider her strange — but no one expects what happens when Dawn suddenly disappears one morning.

Natalie Farrell, a top sales rep and the face of the office, is shocked by Dawn’s absence. When Natalie receives an eerie anonymous phone call, she realises that Dawn’s disappearance is not just odd — it may be sinister. Suddenly, Natalie is tied up in a twisted game she never signed up for.

As she digs deeper, Natalie uncovers dangerous secrets, office rivalries, and a shared history with Dawn that could shatter everything she thought she knew. With every clue, she must decide who to believe — because someone hated Dawn enough to do more than scare her off: someone may have wanted her dead.

In this high-stakes psychological thriller, Freida McFadden explores how jealousy, ambition, and hidden grudges thrive in a seemingly ordinary office. As Natalie and Dawn’s stories unravel, you’re forced to question who the real victim is, and whether the worst crime is the one that can’t be taken back.