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The Unwelcome Guest
5.0 (3 ratings)
ThrillerPsychological ThrillerDomestic Thriller

The Unwelcome Guest

A Thriller

Locked RoomWho Done ItRevenge

A dream vacation becomes a living nightmare in The Unwelcome Guest.

When four brothers and their wives reunite for a long-awaited getaway, the private island they've chosen seems like the perfect sanctuary. The mansion they've rented is a haven of luxury: a sprawling library, a state-of-the-art gym, and breathtaking views from every window. It's a paradise designed to bring the family closer, a place to unwind and rekindle bonds.

But beneath the island's tranquil façade, something sinister stirs. It starts subtly-an uneasy feeling, items vanishing, and sounds resonating from deep within the mansion's walls. What initially seems harmless escalates into something much darker. Accidents grow too precise, too deliberate. The sensation of being watched is impossible to shake.

As fear takes hold, the family discovers they are completely cut off: no cell service, no internet, and the boat that brought them won't return for days.

The Unwelcome Guest bides his time, hiding in the walls, waiting for the perfect moment to strike while the family's dream vacation turns into a deadly nightmare they can't escape.

Content Warnings: Death • Violence • Murder

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Available on Kindle Unlimited

Reader Reviews

5.0

3 ratings

Bob F.

Inside Story
Aug 15, 2026

Book review

The Unwelcome Guest

by Cori Nevruz

An excellent ⭐⭐⭐⭐⭐

A brilliant and gripping psychological thriller by Cori Nevruz, it grabbed my attention from the off and held me in suspense. The huge twist in this one came towards the end, and what a twist, what a shock, there was no way I was expecting that outcome.

What was supposed to be a dream break re-uniting four brothers and their wives on a private island stating in a mansion they have rented turns into a terrifying nightmare.

As the group met up at the dock, excitedly looking forward to a week of fun and relaxation, but the unwelcome guest had other plans for them, he was the one to have the fun.

When inexplicable events start to happen, some what appear to be accidents, some personal items go missing, and some things mysteriously appear, are these occurrences brotherly pranks, and the accidents something more sinister going on?

They have feelings they are being watched, is it their imagination as they are supposed to be alone on the island.

As anxieties and tensions intensify, friction grows, and cracks start to appear between the group, with accusations and jealousy as the panic of something menacing going on within the walls of the mansion.

Is the unwelcome guest out to just spoil their party or something more terrifying?

This is an incredibly addictive and suspenseful thriller that slowly builds up to a fast-paced novel, with a totally unexpected and shocking conclusion.

I love all the books I've read by Cori Nevruz, and this is of no exception, a brilliantly written book with amazing strong characters in stunning visually descriptive settings.

From the first page, I felt this is a must-read book and the need to keep on reading to the end.

Bob F.

Aug 15, 2026

Book review

The Unwelcome Guest

by Cori Nevruz

An excellent ⭐⭐⭐⭐⭐

A brilliant and gripping psychological thriller by Cori Nevruz, it grabbed my attention from the off and held me in suspense. The huge twist in this one came towards the end, and what a twist, what a shock, there was no way I was expecting that outcome.

What was supposed to be a dream break re-uniting four brothers and their wives on a private island stating in a mansion they have rented turns into a terrifying nightmare.

As the group met up at the dock, excitedly looking forward to a week of fun and relaxation, but the unwelcome guest had other plans for them, he was the one to have the fun.

When inexplicable events start to happen, some what appear to be accidents, some personal items go missing, and some things mysteriously appear, are these occurrences brotherly pranks, and the accidents something more sinister going on?

They have feelings they are being watched, is it their imagination as they are supposed to be alone on the island.

As anxieties and tensions intensify, friction grows, and cracks start to appear between the group, with accusations and jealousy as the panic of something menacing going on within the walls of the mansion.

Is the unwelcome guest out to just spoil their party or something more terrifying?

This is an incredibly addictive and suspenseful thriller that slowly builds up to a fast-paced novel, with a totally unexpected and shocking conclusion.

I love all the books I've read by Cori Nevruz, and this is of no exception, a brilliantly written book with amazing strong characters in stunning visually descriptive settings.

From the first page, I felt this is a must-read book and the need to keep on reading to the end.

Charlene M.

Aug 15, 2026
This is a good take on the locked room trope with lots of tension and high stakes. I figured it out about 65% through but that's ok.

I wasn't sure about the handling of the baddie being uncovered - it felt too rushed and abrupt.

But otherwise, a good read and very bingeable!

About the Author

Cori Nevruz
Cori Nevruz is a suspense and thriller author known for her gripping narratives and psychological depth. She has penned five novels: Murder Manor, a psychological thriller with a whisper of the paranormal—book your stay at the manor, but beware: not every guest checks out; The Unwelcome Guest, An island escape, a mansion of dreams... and a nightmare hiding within; Making a Killing (previously published as Noxious), a chilling tale of a lethal assassin targeting retired pensioners; Left Without Answers, which follows a mother teetering on the edge of madness in her quest for justice; and Dirty Laundry, a fast-paced thriller that delves into the unraveling mind of a mom pushed to her limits.

Cori resides in Wilmington, NC, where she balances her writing career with family life alongside her husband and three sons. When she's not crafting thrilling stories, she enjoys reading and following her favorite sports.