The Boy on the Deck, a Deliciously Eerie Domestic Thriller by A.J. McCarthy

The Bottom Line: Deliciously eerie, The Boy on the Dock is about the danger only one woman can see, and the doubt that may destroy her. Highly recommended. 

As The Boy on the Dock opens, bereaved mother Julie Hampton is alone at a rented lake cottage on Vancouver Island, trying to keep herself sane through a morning routine that consists of coffee, work and kayaking. While grieving the drowning death of her young daughter, Abby, Julie sees a thin, terrified boy sitting on a nearby dock. Then he bolts into the trees. 

The sighting gives Julie’s isolation a new purpose. Unable to approach the boy without sending him running, she begins trying to reach him indirectly, leaving small offerings on the dock. However, the child appears frightened and unsupervised, so Julie goes to the house behind the dock, expecting to alert the adult responsible for him. Instead, the home’s resident, volatile-seeming Graham Peller, denies there is any boy to worry about, and tells her his own son drowned years earlier.

Her ex-husband, Keith, worries that she is imagining things. The police are skeptical. Photographs fail to prove what her eyes insist is real. Even Mark Webb, the neighbor who seems eager to help, brings his own uncertainty into the search. 

The book’s early chapters gain much of their suspense from watching Julie try to separate real danger from the possibility that trauma has supplied the shape of a child who needs saving. One of the novel’s sharpest early scenes has Julie climbing a tree to retrieve a heron feather from an abandoned nest, intending to leave it as a gift for the boy. It’s a small act, but it tells the reader a great deal about her. Julie is awkward, reckless, and unexpectedly alive in that moment, briefly restored to the adventurous woman she used to be. Yet the gesture also marks the beginning of a fixation she cannot easily control. 

In Julie, author A.J. McCarthy has created a bereaved mother whose grief clouds her judgment at times, but also gives her a fierce, credible reason to keep looking when everyone else is ready to dismiss what she has seen. The book then becomes driven by one urgent question: what if the person no one believes is the only one who is right?

Structurally, McCarthy alternates the quiet menace of the lake with flashbacks to Julie’s family life before and after Abby’s death, so that the suspense grows from both directions at once. Like McCarthy’s books Cold Betrayal, Faux Friends, and The Other Side, a private disturbance gradually reveals wider criminal implications, and that instinct serves her well here. The novel steadily widens from a private psychological mystery into something larger and more dangerous, with enough late twists, shocks and reversals to keep Julie’s search from becoming predictable

Elsewhere, the lake itself becomes its own character, with its fog, docks, woods, storms and water sounds all becoming part of the book’s machinery of doubt. The surrounding cast gives the story its pressure points. Mark is useful, watchful, and hard to read, the sort of helper whose presence raises as many questions as it answers. Dan, the cottage owner, supplies local knowledge and a sense of the lake’s small community, while Keith remains central even from a distance because Abby’s death still sits between him and Julie like an unresolved verdict. Peller is the strongest early source of menace: angry, controlled, evasive, and frighteningly aware of how unstable Julie can be made to look.

Highly recommended for fans of domestic thrillers with strong aspects of psychological suspense.

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