Tonight comes with a caveat, delivered before proceedings begin by the one-woman show’s writer and performer Nicôle Lecky, who’s sitting in a chair centre-stage. She damaged her foot during Sunday’s matinee at the Brighton Festival, dancing about, and has since had to do the whole thing seated.

“Hey guys, it’s Kayla, back with another video. So, the topic of today’s video is being yourself.” Kayla Day (the wonderful Elsie Fisher, nominated for a Golden Globe and also heard as the voice of Agnes in Despicable Me) is in her last week of eighth grade in upstate New York, compounding the horror of being 13 years old by making self-help YouTube videos in her bedroom. “As always, make sure to share and subscribe to my channel. Gucci!” she signs off chirpily, with Enya’s Orinoco Flow as surprisingly effective background music. But is anyone watching?

One day this all will be over. Give it half a century. In 50 years' time, there will be documentaries in which today’s young, by then old, will explain to generations yet unborn exactly how and why Britain went round the twist in 2016.

“Let’s get a clip, Long Island.” One New York skateboarder encourages another, who’s from the ‘burbs, to show off ollies, pop shuvits and kick-flips for a YouTube video. But hang on: “There are too many penises in the way.” This is a posse of young women, a rare sighting in the male world of the skate park.

The controversial historian Niall Ferguson is the author of some dozen books, including substantial narratives of the Rothschild dynasty, a history of money, and a study of Henry Kissinger up to and including the Vietnam war.

Some feared that turning Gillian Flynn's bestselling novel into a movie couldn't be done, but with Flynn herself in the screenwriter's chair and the clinically precise David Fincher wearing the director's hat, it's turned out a treat. It's long at 145 minutes, but it needed space to accommodate its titillating mix of police procedural, whodunnit, social satire and psychological drama.

Gone Girl is the story of the marriage of Nick and Amy Dunne, a pair of high-profile journalists whose blissfully gilded Manhattan existence has been brought to a shuddering halt by an economic recession which has left them both jobless. They've ended up beached in the fictional blanksville of North Carthage, Missouri, Nick's home town, where his dementia-afflicted dad is in a care home and Nick runs a bar (called The Bar) with his bracingly foul-mouthed twin sister Margo (Carrie Coon). In Ben Affleck's nicely-controlled portrayal, Nick is amiable, cynical and a bit of a beer-drinking slob, and incidentally unable to resist the lissome allure of a young journalism student (Emily Ratajkowski).

It depicts marriage as a trap which grips tighter the more you try to escape it

The thrill is gone from the marital bed, especially for Amy (Rosamund Pike), an Ivy League graduate whose aura of infinite potential makes you feel she should be editing Tatler or running a hedge fund. The product of pushy, self-regarding parents who used her as raw material for their fictional children's stories about "Amazing Amy", she thrums with intelligence and ambition, not to mention fearlessly upfront sexuality (Pike's icy brilliance might have been specifically designed for the role). When she goes missing from home on the couple's fifth wedding anniversary, leaving a shattered table and signs of a bloody struggle, Nick is shocked and confused, not least because he's seen enough episodes of CSI to realise that the husband is bound to be the chief suspect.

The elaborately wrought tale unfolds through the device of double unreliable narrators, with Nick's in-the-present account of his life with Amy counterpointed by her version as told through a diary discovered during the police investigation. Kim Dickens plays lead detective Rhonda Boney like a postmodern Marge Gunderson from Fargo, studying Nick with an increasingly critical eye as he reveals how startlingly little he knows about his wife's life, even while she has been funding his own with the remnants of her trust fund. He feels the figurative noose tightening around his neck when Amy's diaries disclose her fear of her husband, so much so that she felt it necessary to buy a gun.

Fincher smartly contrasts Nick's incomprehending bemusement against the damning spider-web of Amy's account (augmented by her trail of cunning wedding-anniversary clues), and he has a ball with the media's handling of what soon balloons into a great national furore. The commentators waste no time in packaging Nick up for Death Row, while cable TV host Ellen Abbott (Missi Pyle) flays him with a hysterical trial-by-TV. Much black humour is extracted from the way Nick's unfamiliarity with the rules of social media trap him into a string of damaging selfies and inappropriate poses. Finally realising that life-threatening sensationalism can only be fought with brazen image manipulation, Nick hires the slick celebrity lawyer Tanner Bolt (Tyler Perry), a master of the black arts of TV presentation and public confession.

There are as many layers in Gone Girl as you care to find. It hints at a lineage of noir-ish thrillers from Double Indemnity to Presumed Innocent with a shot of Patricia Highsmith for good measure, while being as knowingly and carelessly contemporary as Twitter and the iPhone 6 (Fincher, after all, directed both Seven and The Social Network). It depicts marriage as a trap which grips tighter the more you try to escape it, but also as a highwire battle of wits which demands that both partners must be at the top of their game. An episode featuring Amy and her obsessed ex-lover Desi (Neil Patrick Harris, a nearly-dead ringer for Niles Crane) offers a chilling alternative vision of true love as round-the-clock surveillance in a state-of-the-art cage. It's cool, dark and treacherous, but often laugh-out-loud funny. And undoubtedly worth seeing more than once.

THE BEST OF ROSAMUND PIKE

A United Kingdom. Love, race and power politics under African skies

Barney's Version. Pike plays the third wife as novelist Mordecai Richler makes a mostly welcome return to the screen

Jack Reacher. Pike survives the famous curse of Cruise

Made in Dagenham. Pike almost steals a warm-hearted comedy about ladies striking for equal pay

Women in Love. A BBC Four adaptation starring Pike and Rachael Stirling does not get over The Rainbow

PLUS ONE TURKEY

Thunderbirds Are Go. Pike voicing Lady Penelope cannot save the day for ITV reboot

Overleaf: watch the trailer for Gone Girl