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.