‘I definitely needed a lie-down after that!’ The most nerve-wracking television episodes ever

Spooks – I Spy Apocalypse (2003)

This installment starts with the Spooks team restricted as part of a simulation relating to a hypothetical terrorist attack, supervised by two Home Office agents. As the situation develops, it seems an actual attack has occurred and a chemical weapon has been unleashed. The tension ratchets up as reports reveal a disaster happening externally, and escalates as the boss appears to be infected, and the two Home Office officials attempt to leave, forcing Matthew Macfadyen’s character to choose between firing at them or allowing them to leave and potentially infecting the secure MI5 headquarters. As this is Spooks, the outcome is expected.

Threads (1984)

Threads was low budget but arguably the most terrifying series I have viewed owing to its grim authenticity and grim official statistics. Watched it about a month ago having watched the original; I often attended the bar in Sheffield shown in the series that highlighted the truth and the casual, straightforward government details that were transmitted. Still absolutely terrifying after three and a half decades.

Severance – The We We Are (2022)

The first season finale of Severance has to be right up there in terms of gripping installments. I remained for the whole show actually sitting tensely, exerting with Dylan to maintain his grip on the controls that kept the Innies on overtime, while screaming at the Innies to disclose their facts. The ultimate peak – “she is living!” – was like an eruption.

The 2024 Industry episode White Mischief

The fifth episode of Industry’s third season caused my heart to pound. I was compelled to halt and rise and exit the space repeatedly due to the immense extent of the wanton self-destruction I observed. Rishi Ramdani is in deep shit professionally and personally – up to his eyeballs in debt to loan sharks due to his addictive betting, engaging in dangerous ventures with a gamble on the pound that might cost his firm millions. Naturally, he embarks on a betting frenzy, does tons of drugs and drink and experiences wins and losses, gets beaten to a pulp. Whenever you assume things cannot decline more, it worsens. Redemption seems possible as the installment closes yet he wastes the chance, with horrifying consequences in the concluding part of the season. Certainly required a rest afterward!

Peep Show – Holiday from 2007

Peep Show is not inherently a tense series. But the episode Holiday includes such amounts of embarrassment that it will make you rise the whole episode, permeated with worry. It all ramps up when Jeremy and Mark realize having to lie about the dog they by chance collide with and following tries to eliminate it. You then spend the rest of the episode wondering if it might be more awful than cremation, and it can be!

The West Wing – The Two Cathedrals from 2001

Nothing I’ve watched has been more intense compared to my initial viewing the season two finale to The West Wing. The show opens with the fallout of the death (in a traffic accident) of the president’s private assistant and reaches a crescendo involving a Haitian emergency, and the fallout from the non-disclosure regarding the president’s multiple sclerosis diagnosis, coupled with verification of his aim to run for another term. Superb programming. Never bettered.

Bodyguard – episode one from 2018

The opening of the British series Bodyguard, featuring the main character on a train alongside his juvenile boy, is for me one of the most intense episodes ever. He observes a woman in Islamic attire going into the loo and senses something is wrong. The bomb diffuser experts are called, enter the train, and attempt to convince the woman to discard her bomb jacket. Suspense rises to a nearly intolerable level, until, finally, the vest is neutralized.

The 2001 Buffy episode The Body

Buffy arrives at her residence to find her mum has passed away from natural reasons, which is the most unusual type of death in this supernatural show. The episode has no background music, a gloomy atmosphere, and we witness the episode via the perspective of Buffy’s shock of discovering her mother.

The 2007 The Sopranos finale Made in America

The ultimate sequence of the series finale of the show was pants-wettingly tense. And for those who saw it during its initial broadcast, you – initially – were uncertain of the reason. Tony’s foes, genuine and fictional, were all vanquished. This seems similar to the first season’s finale, right? “Recall the minor details.” However, the vibe is oddly threatening. Nearly Twin Peaks-like fear. The family gathers in a diner. Meadow finds a parking spot. Tony gloomily informs Carmela there’s trouble afoot with an additional associate collaborating with the authorities. Meadow secures a parking space. Strange people enter the restaurant. Look at Tony(?) Meadow parks. Tony puts a record on the jukebox. Meadow finds a spot. The bell rings, someone enters the restaurant. It cannot be Meadow, she is still parking. Tony looks up. Keep going. It ceases. My heart dropped from my mouth around 20 minutes subsequently.

The Walking Dead – The Last Day on Earth from 2016

I stayed up to watch this episode at 2am. It was so intense after the buildup of bad guy Negan finding the group, savagely teasing his prey then not knowing who he killed (finished with an unresolved situation). The victim’s POV shot and the muted audio – oh no! {We then had to wait for season seven|We then needed to await season

Erin Mcgrath
Erin Mcgrath

A tech strategist with over a decade of experience in digital innovation and startup consulting across Europe.