What Is Split Second About?
The premise of Split Second in 312 words, with nothing given away. The full story follows below.
In a London choked by relentless rain, the city’s streets have become winding rivers and the usual clang of traffic is muffled by the constant roar of water. The flood‑torn metropolis feels both claustrophobic and endless, a sprawling maze where shadows hide more than just puddles. This bleak, almost noir‑like atmosphere sets the stage for a story that blends procedural tension with a lingering sense of dread, as every corner of the capital seems to whisper that something is lurking just beneath the surface.
Enter Dick Durkin, a fresh‑out‑of‑the‑academy officer eager to prove himself, and his partner Harley Stone, a hardened homicide detective whose reputation is built on surviving the darkest corners of the force. Stone’s habits—coffee, chocolate, and a nervous edge born from a traumatic loss—contrast sharply with Durkin’s methodical optimism. Their partnership is an uneasy one, forged by command directives that keep them glued together, forcing the rookie to observe the veteran’s volatile temperament while the older cop begrudgingly leans on his newcomer’s steadiness.
Against the backdrop of the flooded city, the two detectives are thrust into an investigation that defies ordinary explanation. Murders seem to follow an uncanny rhythm tied to the moon, and each crime scene hints at a deeper, almost scientific anomaly. As they sift through clues, the pressure mounts not only from the case itself but also from personal ghosts that haunt both men—old wounds, unresolved relationships, and the ever‑present strain of a job that demands absolute focus in a world gone awry.
The film balances gritty police work with a foreboding, almost supernatural undertone, inviting viewers to wonder what prowls the submerged tunnels and why the city’s own darkness seems to echo the detectives’ inner turmoil. The tension between duty and doubt, experience and naiveté, drives the narrative forward, promising a plunge into mysteries that are as much about the characters as the ever‑encroaching flood.
What Happens in Split Second?
The complete story of Split Second, from the first scene to the last, in 447 words (about 2 minutes). Spoilers throughout.
Spoilers ahead
In the year 2008, relentless rainfall has flooded vast parts of London, turning the city into a maze of submerged streets and shadowed corridors. A rookie officer, Dick Durkin, is paired with Harley Stone [Rutger Hauer], a battle-worn homicide detective who, as his commanding officer puts it, survives on “anxiety, coffee, and chocolate” after a wound that cost him his partner Foster three years earlier. With the murders resuming, Stone becomes hopelessly obsessed, and Durkin is ordered to stay glued to him at all times, documenting every sign of instability.
As they work the case, the pair comb through crime scenes that stubbornly resist ordinary explanation. The killer’s pattern seems tied to the lunar cycle, and shockingly, each victim has a part of an organ removed—apparently to be eaten. Laboratory tests at the crime scene reveal something even more disturbing: the killer’s blood contains multiple recombinant DNA strands, suggesting it has somehow absorbed the genetic material of its victims. The case grows stranger still with the personal complication of Michelle [Kim Cattrall], Foster’s wife, returning into Stone’s life after the years of secrets and an affair Stone once had with her.
Despite his rough exterior, Harley Stone begins to loosen under Durkin’s steady presence, and they start to form a bond. Durkin theorizes that the killer is taunting Stone directly, staging each brutal act at a location meant to lure him closer. Stone himself seems to share a psychic link with the monster, a connection born from the old wound that won him his nightmare reputation. The tension escalates when the killer targets a woman in Stone’s own apartment building, and then abducts Michelle, dragging the investigation toward a deeper, more personal abyss.
The chase leads them deep beneath the city into the flooded tunnels of the London Underground. They push forward to uncover the truth: the killer is not human but a large, terrifying creature that moves with terrifying speed and ferocity. Durkin uncovers a haunting memory—Stone had escaped the same creature a decade earlier, and it now fixates on killing him, using each appearance as a cruel lure. Armed and desperate, they trace the creature to its lair, an abandoned underground train station.
In a tense confrontation, they find Michelle suspended over the water as bait. Stone makes a decisive move to free her, triggering the monster’s arrival. A brutal fight ensues; Durkin manages to wound the creature’s chest, while Stone delivers the fatal blow, tearing out its heart. As they stagger out into the flooded corridors, bubbles rise to the surface—an ominous sign that the terror may not be finished, for there could be more than one creature lurking in the depths beneath London.
Split Second Timeline: Every Key Event in Order
12 key events in the order they happen, from “London flood sets the stage” to “The kill and the aftermath”. 12 events name a place, across 10 locations.
- 1
London flood sets the stage
In 2008, heavy rains and global warming have flooded large areas of London, turning the city into a perilous landscape. Rookie detective Dick Durkin is paired with Harley Stone, a burnt-out veteran who survives on anxiety, coffee, and chocolate. The new case unfolds against a city almost swallowed by water.
When:2008 Where:London
- 2
Foster’s death haunts Stone
Stone bears the memory of his partner Foster’s murder by a serial killer three years earlier, a wound that never fully healed. Durkin is ordered to stay close and report any unstable behavior as they team up. The past casts a shadow over the investigation.
When:2005 Where:Police Headquarters
- 3
New killings, lunar clue
A fresh wave of murders begins, with the killer taking an organ from each victim in what seems like a ritual. The detectives find the killings appear tied to the lunar cycle, offering a disturbing pattern. They search crime scenes but remain without a suspect.
When:2008 Where:London crime scenes
- 4
Forensic discovery: recombinant DNA
Lab analysis reveals the killer’s blood contains multiple recombinant DNA strands, suggesting that it has absorbed the DNA of its victims. The finding hints the predator is something beyond human. The team starts rethinking the nature of the threat.
When:2008 Where:Forensic laboratory
- 5
Michelle returns
Michelle, Foster’s wife with whom Stone had an affair, returns to the case, bringing personal tensions into the investigation. Durkin’s partnership with Stone starts to loosen as they bond over the mounting evidence. The case grows more complicated with emotional undercurrents.
When:2008 Where:Stone’s apartment / Police HQ
- 6
Psychic link and taunts
Durkin hypothesizes that the killer is taunting Stone by stalking him and targeting locations around him. Stone finds a psychic connection to the killer through the wound it inflicted, making the hunt deeply personal. The dynamic between the two detectives deepens.
When:2008 Where:Various locations
- 7
Apartment attack and kidnapping
The killer strikes in Stone’s own apartment building, assaults a resident, and kidnaps Michelle, pushing the investigation toward a high-stakes chase. Stone and Durkin race to track the kidnapper through the flooded city. The personal danger intensifies.
When:2008 Where:Stone’s apartment building
- 8
Into the flooded tunnels
The detectives pursue the killer into the submerged London Underground tunnels, following prints and the killer’s deadly efficiency. They realize the creature moves with terrifying speed and seems to be drawn to Stone. The chase moves from streets to subterranean waterways.
When:2008 Where:London Underground tunnels
- 9
The revelation: it’s a monstrous creature
They discover the killer is not human but a large, fast, demonic creature with a voracious hunger. Stone reveals that he escaped from it ten years ago, explaining the creature’s fixation on him. The monster’s appearances are designed to lure Stone closer.
When:1998 Where:Underground tunnels
- 10
Lair found and plan formed
Stone and Durkin locate the creature’s lair near the abandoned underground area and prepare a plan to draw it out. They arm themselves and rely on Stone’s knowledge of the predator. The team braces for a deadly confrontation.
When:2008 Where:Abandoned underground train station
- 11
The bait and the confrontation
Michelle is used as bait at the abandoned station while Stone and Durkin set the trap. When the creature appears, a fierce fight erupts in the water, pushing the detectives to their limits. They fight to protect Michelle and end the threat.
When:2008 Where:Abandoned underground train station
- 12
The kill and the aftermath
Durkin wounds the creature’s chest, enabling Stone to pull out its heart and kill it. They escape the station, but bubbles surfacing suggest there may be more than one monster. The end of this encounter hints at further dangers lurking below.
When:2008 Where:Abandoned underground train station
Who Are the Main Characters in Split Second?
3 characters, among them Harley Stone, Dick Durkin and Michelle: who each one is and the part they play in the story. 2 of them link to the actor’s page.
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Harley Stone
Played by Rutger Hauer
A burnt-out veteran detective who survives on coffee, chocolate, and a relentless drive to stop the killer. He believes the murders are a taunting, personal game that tests his resolve, and his volatile temperament hides a determined, capable mind.
- 🛡️ Veteran detective
- 💥 Traumatic past
- 🧭 Single-minded
- DD
Dick Durkin
A rookie officer who is also Oxford-educated, Durkin is ordered to partner with Stone and monitor his unstable behavior. He gradually opens up to the case, balancing logic with the strain of working with a haunted veteran while trying to keep pace with the escalating danger.
- 🎓 Oxford-educated psychologist
- 👮 Rookie cop
- 🧭 Analytical
-
Michelle
Played by Kim Cattrall
Foster’s wife who had an affair with Stone. She becomes a target when the killer abducts her, becoming a focal point in the detectives’ pursuit and a personal stake in stopping the monster.
- 💔 Target
- 🔎 Kidnapping victim
- 🧭 Central female lead
Where and When Is Split Second Set?
Split Second is set in London and United Kingdom (2008). Here is why the time and place matter to the story.
When
2008
In 2008, heavy rainfall and climate effects leave large parts of London underwater. The year anchors a nightmare of urban inundation, influencing how people live, work, and fear the city. The lurid case unfolds against this backdrop of a flooded metropolis and a killer who thrives in the storm-ridden environment.
Where
London, United Kingdom
The story unfolds in a flooded London where rising waters redefine the city. The investigation moves through rain-slick streets and the submerged London Underground, turning familiar landmarks into perilous corridors. The setting blends urban decay with survival drama as the detectives navigate waterlogged tunnels and ruined districts.
- 🌊 Flooded city
- 🏙️ Urban thriller
- ⚠️ Climate crisis
What Are the Themes of Split Second?
3 ideas the story keeps returning to, among them Obsession, DNA and Moon Killings.
-
01
Obsession
Harley Stone’s pursuit of the killer consumes him, shaping his decisions and straining his partnership with Durkin. The case becomes an obsession that blurs lines between professional duty and personal fixation. A psychic link to the killer deepens the fixation, making the pursuit feel almost personal.
-
02
DNA
Lab analysis reveals recombinant DNA in the killer’s blood, suggesting an origin beyond ordinary crime. The story treats science as a crucial weapon against a seemingly inhuman threat. Clues rise and fall with the bio-molecular evidence, reframing the mystery from purely psychological to scientifically unsettling.
-
03
Moon Killings
Murder patterns align with the lunar cycle, giving the killer a ritual-like rhythm. The floods and tunnels provide a haunting stage where the creature can stalk and strike. The moonlit timing adds a chilling sense of inevitability to the climactic confrontation.
What Kind of Film Is Split Second?
Dark in tone, with fast pacing and a moderate story, going by the plot summary.
- Tone
- Dark
- Pacing
- Fast
- Story
- Moderate
- Intensity
- High
- Ending
- Ambiguous
A fast-paced and intensely claustrophobic thriller set in a flooded dystopian London, where a guilt-ridden detective hunts a monstrous serial killer in a race against time that feels brutal, relentless, and deeply unsettling.
- tense
- oppressive
- paranoid
- claustrophobic
- dystopian
- gritty
- police investigation
- monster hunt
- dystopian future
- survival
Content notes: graphic violence, mutilation, monster attack, body horror, abduction.
Quiz
How well do you remember Split Second? Test yourself on the story.
