book cover of Optimum Dose
 

Optimum Dose

(2025)
(A book in the Dreadmoor Cycle series)
A Story by

 
 
They calculated everything—except her will to survive.Stranded in Thailand with no money and no passport, Isla jumps at the chance of a week’s work on a private island. The sea is dazzling. The air is scented with jasmine. The pay is generous - enough for her to get home and start over.

But something is wrong on the island. Her door won’t lock, the security guard is always watching her, and no one will talk about what happened to the previous assistant. The boat that brought her won’t return for seven days, and it’s beginning to feel like a lifetime away.

Optimum Dose is a tense, immersive thriller that combines the claustrophobic suspense of Sarah Pearse's The Sanatorium with the haunting speculative power of Christina Sweeney-Baird's The End of Men.
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Praise for Optimum Dose from ARC readers...

"Escalates from claustrophobic thriller to full-blown horror in the best way possible.’

‘The tension is relentless, the stakes terrifyingly real.’

‘Medical horror, survival desperation, and a gut-punch of an ending.’

‘A standout thriller—the pacing is relentless and Isla’s voice unforgettable.’



Genre: Thriller

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