London Kills centres around an elite murder investigation squad in London headed by DI David Bradford (Hugo Speer), an experienced detective whose judgement is called into question following the unexpected disappearance of his wife.

The series follows on from Marquess' former London-based police procedural series Suspects. The cast features a number of striking similarities, includes a documentary-style feel and has an ad-lib script allowing the cast partially to improvise their lines based on a synopsis. In 2024, it was renewed for a fifth series.

***** S01E01 The Politician's Son.*
Fresh back from leave following the disappearance of his wife, DI David Bradford investigates the death of a politician's disfigured son found hanging from a tree.
*****

***** S01E02 Stag Night.*
A groom-to-be is murdered during his stag night and suspicion falls on his missing stepson.
*****

***** S01E03 Blood Lines.*
A respected doctor is murdered on his houseboat and detectives uncover disturbing family secrets.
*****

***** S01E04 Sex Games.*
The body of a dating agency owner washes ashore and investigators suspect the case is not a simple murder-suicide.
*****

***** S01E05 Connected.*
DI Bradford uncovers Amber's link to his missing wife as tragedy strikes close to home.
*****

***** S02E01 The Dark.*
Builders discover human remains buried beneath decking at a student house in Camden Town.
*****

***** S02E02 The Ultimate Price.*
A pub landlord is beaten to death and detectives suspect dark secrets involving his family.
*****

***** S02E03 Family Affairs.*
A Portuguese au pair is found murdered and her wealthy former employers become suspects.
*****

***** S02E04 Turf War.*
The murder of a gangland boss sparks a dangerous investigation tied to David's missing wife.
*****

***** S02E05 Capture.*
A taxi driver's murder links directly to Sarah Bradford's disappearance.
*****

***** S03E01 Grace.*
Detectives investigate a string of murders that may involve a police officer.
*****

***** S03E02 Cyber Bully.*
A murdered schoolboy case forces Vivienne to confront a personal connection to a suspect.
*****

***** S03E03 Blood.*
A murdered locksmith connects Billie to the truth behind her father's death.
*****

***** S03E04 Control Freak.*
A corpse in a suitcase leads detectives into a bitter family feud.
*****

***** S03E05 Crossing the Line.*
David and Vivienne make dangerous decisions that cross professional and personal boundaries.
*****

***** S04E01 Wake-up Call.*
Rob is framed for murder while David's reckless actions worsen the situation.
*****

***** S04E02 Fallout.*
The suspicious death of a soldier exposes family lies and long-hidden consequences.
*****

***** S04E03 Old Wounds.*
A fatal stabbing may connect to a local girl gang despite David's doubts.
*****

***** S04E04 Amnesia.*
A murdered man and his family's troubled past point detectives toward revenge.
*****

***** S04E05 Vendetta.*
A shocking parental revelation may hold the key to murder as David's judgement falters.
*****