UCOS reinvestigate the 2001 death of a senior palaeontologist.
UCOS reopens the case of a zoo keeper who was mauled to death in the tiger enclosure.
UCOS reinvestigate the murder of a man found in a west London alleyway seven years ago.
The team reinvestigate the murder of Eddie Chapman, leader of a notorious motorbike gang.
The UCOS team reinvestigate the disappearance of a prominent physics professor.
UCOS reinvestigates the unexplained death of a popular market trader.
UCOS are drawn into a world of immigration loopholes, Albanian gangs and family feuds.
UCOS reinvestigates the murder of an unnamed vagrant on a tube train.
The team find themselves drawn into a case involving high-level police corruption.
The gun used to murder a talented young boxer 15 years ago surfaces in an armed robbery.
The team reinvestigate the 1983 abduction of 18-year-old debutante Barbara Linden-Warner.
UCOS receive information that a club fire in 1996 was a targeted arson attack.
The team reinvestigates the murder of fashion designer Ritchie Levene.
The team reinvestigates the death of celebrated graffiti artist Danny 'Flak' Tyler.
UCOS hunt a serial rapist in a chocolate factory which hides many dark secrets.
A psychic tells a dead man's daughter she needs to resolve his unfinished business.