What Lies Between Us

What Lies Between Us by John Marrs is a standalone psychological thriller published in May 2020 by Thomas & Mercer. Readers who want to check content warnings before going in are advised to do so - the novel deals with serious harm spanning multiple generations, handled without restraint, and is not a book for the faint-hearted.

Every other evening, Nina prepares dinner for her mother Maggie and brings it to the room where Maggie has lived for years. After dinner, Nina takes her back upstairs, secures the chain around her ankle, and closes the door. This arrangement has been in place for a long time. Maggie did something that Nina cannot forgive. What exactly that was is the question the novel spends its length answering.

Marrs makes no attempt to hide the captivity - it's there from the first pages, stated plainly, functioning not as a twist but as a premise. What he withholds, carefully and persistently, is context: why Nina has arrived at this point, what Maggie actually did, and - crucially - how much either of them is telling the truth about any of it. The Multiple POV structure alternates between Nina and Maggie in the present, and two Multiple Timelines weave in the events of twenty-five years earlier that set everything in motion. Both women are Unreliable Narrators in the fullest sense - not simply withholding facts from the reader, but withholding them from each other, each convinced her own version of events is the accurate one.

The Psychological Manipulation running through their shared history operates in both directions. Maggie is the captive, and she is also, in her own way, playing a longer game with the information she controls. Nina is the captor, and she is also, in her own way, the product of something that was done to her long before she had any power over it. Marrs keeps both sympathies and both versions of events genuinely uncertain for far longer than readers expect, and the Family Legacy of what happened in that house twenty-five years ago - what was allowed, what was hidden, and what it cost everyone involved - gives the novel's Dark Secrets real cumulative weight.

The Domestic Suspense structure is tight and deliberately claustrophobic: most of the action takes place within one house, across two timelines, between two women who have a shared history neither of them has been fully honest about. Marrs paces the Mystery and Secrets Revealed across the novel's length with considerable skill, stacking revelation upon revelation in a way that consistently reframes what readers thought they understood. The Twist Ending is among the most discussed in the genre for readers familiar with Marrs's work - genuinely divisive, with enthusiasts calling it devastating and detractors finding it a step beyond plausibility - but virtually no one describes it as predictable.

Reception has been broadly enthusiastic with the caveats that the novel is relentlessly dark, that both central characters are deeply difficult to spend time with, and that the ending divides. For readers who want a domestic thriller that operates without a moral safety net and earns its darkness across the full length of the book rather than just at the climax, this is one of the most distinctive entries in contemporary psychological suspense.