7 Books Like The Coworker That Will Keep You Guessing in 2026

If The Coworker by Freida McFadden kept you turning pages because you could never quite decide whom to trust, you are probably looking for your next psychological thriller with the same addictive combination of secrets, deception, unreliable characters, workplace tension, and shocking twists.

Below is a list of 7 books like The Coworker that will keep you guessing in 2026.

1. The Housemaid by Freida McFadden

The Housemaid is a fast-paced psychological thriller filled with secrets, manipulation, and shocking revelations. We follow Millie, a woman who desperately needs a fresh start and accepts a housekeeping job with a wealthy family. At first, the opportunity seems almost too good to be true, but strange behavior inside the household quickly makes us question what is really happening. McFadden keeps the tension high through short chapters, suspicious characters, and carefully placed clues. Readers who enjoyed The Coworker will appreciate the similar atmosphere of mistrust and uncertainty. It is an addictive choice for anyone who loves unpredictable domestic thrillers.

2. Never Lie by Freida McFadden

Never Lie takes us into an isolated mansion where nothing is quite what it seems. Newlyweds Tricia and Ethan become trapped inside the property during a snowstorm while viewing it as a potential new home. While exploring, Tricia discovers recordings made by a psychiatrist who mysteriously disappeared. As she listens, disturbing secrets begin emerging, and every revelation raises another question. The isolated setting makes the story particularly tense because there is nowhere comfortable to escape. Like The Coworker, the novel relies heavily on uncertainty and deception. We are constantly encouraged to reconsider our assumptions, making Never Lie an excellent pick for twist-loving readers.

3. The Inmate by Freida McFadden

The Inmate combines psychological suspense, romance, crime, and secrets into a fast-moving thriller. Brooke returns to her hometown and takes a job as a nurse practitioner at a maximum-security prison. One of the inmates is someone she knows from her past, creating an immediate emotional conflict. As Brooke becomes increasingly involved in the situation, memories and hidden truths begin resurfacing. The story keeps us wondering whether the people involved are telling the truth and whether Brooke's memories can be trusted. Readers who enjoyed The Coworker will appreciate the short chapters, escalating tension, suspicious characters, and revelations that continually change how we understand the story.

4. The Perfect Marriage by Jeneva Rose

The Perfect Marriage explores marriage, betrayal, ambition, and the uncomfortable question of whether we can ever completely know another person. Sarah Morgan is a successful attorney whose husband, Adam, becomes involved in a murder investigation after his mistress is found dead. Sarah decides to defend him, but the case forces her to confront uncomfortable truths about their relationship. As different perspectives reveal conflicting versions of events, we are encouraged to question everyone's motives. The novel keeps the suspense alive by constantly shifting our understanding of the characters. Readers who enjoyed The Coworker will appreciate its secrets, relationship drama, manipulation, and unpredictable twists.

5. The Locked Door by Freida McFadden

The Locked Door centers on Nora Davis, a successful doctor who has spent years trying to escape the horrifying legacy of her childhood. Her father was a serial killer, and Nora has worked hard to build a completely different life. When murders resembling her father's crimes begin happening again, however, her carefully protected past becomes impossible to ignore. The story creates tension by connecting Nora's present to disturbing events from her childhood. McFadden's quick pacing and short chapters make the mystery easy to race through. If we enjoyed The Coworker for its secrets and constant suspicion, this thriller offers another compelling mystery.

6. The Silent Patient by Alex Michaelides

The Silent Patient is a psychological thriller built around one haunting mystery: why did Alicia Berenson shoot her husband and then refuse to speak another word? After the murder, Alicia becomes silent, leaving investigators and those around her desperate for answers. A psychotherapist becomes determined to uncover what happened and understand the trauma behind her silence. As the investigation develops, hidden relationships and disturbing details begin to emerge. Readers who enjoyed The Coworker will appreciate the atmosphere of uncertainty and the gradual revelation of secrets. The novel is especially appealing if we enjoy psychological mysteries where the truth remains hidden until the final stages.

7. The Guest List by Lucy Foley

The Guest List takes us to a remote island for what should be a glamorous wedding celebration. Instead, old grudges, jealousy, resentment, and hidden secrets gradually come to the surface. When someone dies, everyone at the wedding becomes a potential suspect. Lucy Foley tells the story through several different perspectives, allowing us to see the event from multiple angles while keeping important information hidden. This structure makes the reader constantly revise their theories about the characters and the crime. Fans of The Coworker will enjoy the suspicious personalities, complicated relationships, and sense that everyone has something to hide. It is atmospheric, mysterious, and unpredictable.

Conclusion

Finding books like The Coworker is ultimately about finding the right reading experience, not simply choosing another book labeled “psychological thriller.”