Playing Nice

Playing Nice by J.P. Delaney is a standalone psychological thriller published in 2020, his third novel following The Girl Before and Believe Me.

Pete Riley opens his front door one ordinary morning to a stranger, Miles Lambert, who delivers the kind of news no parent is prepared for: Pete's two-year-old son, Theo, isn't biologically his at all. An understaffed hospital switched two babies at birth, and the boy Miles and his wife Lucy have been raising as their own, David, is actually Pete and his partner Maddie's biological child. Rather than swap the children back and risk the trauma of separating both boys from the only parents they've ever known, the two families agree on something far messier and more fraught: staying as they are, while building a relationship between both sets of parents and both children. It's a generous, well-intentioned plan. It does not stay that way for long.

What makes this such an effective Family Legacy thriller is how thoroughly Delaney grounds the central dilemma in genuine social and economic friction. Pete and Maddie are a modest, middle-class couple - Pete a freelance journalist who's stepped back from his career to be Theo's primary carer, Maddie a working mother who's struggled to bond with her son in ways she finds difficult to admit. Miles and Lucy are wealthy, polished, and instantly equipped to offer their newly discovered biological son advantages Pete and Maddie can't match. Delaney tells the story across alternating Multiple POV chapters from Pete and Maddie, and uses interspersed legal file notes and case documents to needle at the reader's confidence in how the situation is actually unfolding versus how it's being officially recorded - an early, effective seed of the Unreliable Narrator tension that builds across the book.

As the arrangement between the families breaks down and the matter heads toward the family courts, the novel becomes a genuinely unsettling study in Power & Control - the kind wealth can buy, the kind charm can manufacture, and the kind that operates entirely within the bounds of a legal system not equipped to recognise it for what it is. The Dark Secrets surrounding Miles in particular widen considerably as the custody dispute escalates, and Delaney builds real tension around the asymmetry between the two families: one increasingly outmatched at every official turn, the other able to make problems disappear with troubling ease.

The Mystery and Secrets Revealed across the back half push the story well beyond a straightforward custody drama, and the Twist Ending has been widely praised as one of Delaney's most propulsive - readers and reviewers consistently describe being unable to put the final stretch down once events start escalating in earnest. Several reviewers have noted real emotional investment in Pete and Maddie specifically, a credit to how thoroughly Delaney builds their sympathy before testing it.

For readers drawn to high-stakes domestic suspense that interrogates class, parenthood, and what people are capable of when a child is on the line, Playing Nice remains one of Delaney's most gripping and widely read titles.