Here is a couple torn apart by grief after the death from cancer of their young son, Donald, a year previously, his brother Jeff disappearing into cyberspace as a retreat, and mother Renata cloaked in pain and online in search of answers on a Catholic-run site, where her counsellor goes by the screen name "God". Husband Jim struggles to hold together a job, the relationship with his emotionally distant wife and a surviving son who flees the unravelling family.
The Delpes' world becomes increasingly dependent on cellphones and computers as a substitute for real communication, the fantasy game Life of Lore where Jim signs in anonymously to find the missing Jeff now living there as a character called "Merchant of Menace", and of a blurring of lines between emotion and reality, the factual and the fanciful.
If their real world is visceral (graphic and raw sex, bloody encounters) the one on the screens is no less so but infinitely more dangerous to their well-being, as they all discover when their various characters collide.
McCarten pulls the reader into this family's web but often overplays his hand with metaphors and similes where thoughts are like radio waves, the world is pixilated and we SatNav our way through life.
But it is the human sadness at the heart here - of a marriage broken by grief and sliding into anger and indifference, of a teenager so desperate for love and understanding he phones his dead brother and becomes a slave in cyberworld - which draws you into these landscapes populated by the lost.
If the improbability of some of this - and peripheral characters who sometimes seem little more than ciphers or metaphors themselves - feels strained, we need only look up from our books at what is happening all around us, and consider that 50 per cent of people online lie about their age, weight, job, marital status and gender.
And that chilling fact, as McCarten wryly notes when quoting it - and other statistics at the start - is sourced directly from ... the internet.
Graham Reid is an Auckland writer.