He's a bit of a wine buff. He ponders the unreliability of maternal love, the harsh configurations that await him.
He's eloquent, ironic and funny: "My appointment diary notes only my forthcoming birthday."
In their squalid but financially soaring townhouse, Trudy and Claude drink, plot and lust.
She's a beautiful, glitteringly amoral airhead; he's a man of empty gestures with a whiff of sulphur, someone who whistles ring-tones and TV jingles, "knows only clothes and cars".
Yet, as in Shakespeare, it's the doomed father who's the most absorbing character. What are his weaknesses? How tedious is his virtue? Is he actually more devious than the two clunky conspirators?
The plot is permeated with the typically McEwan weld of physical shock and psychological examination, of underworld and inner world - rather more inner than usual. The incongruity of the two gives the narrative energy, ambivalence, anxiety.
Tension rules. Outcomes are uncertain, all the way to the Grand Guignol, marginally facile ending of birth, screams, withheld passports and door-bangings.
Nutshell assumes its readers will be literate, thoughtful and cultured. You have to like that. It also displays the benefits that brevity brings: details are sharp; style crystalline, developments swift. You never labour through a McEwan novel. You have to like that, too.
NUTSHELL
by Ian McEwan
(Jonathan Cape, $38)