Documentary series following the work of homicide detectives across different cities in the USA. Two murder investigations are usually shown per episode (sometimes one). The main focus is on the first 48 hours of the investigation and most investigations are usually concluded, however investigations can go on a long time.
This is probably the best murder investigation series out there, if you enjoy watching investigations then this show is for you. Some episodes are quite intense and feel very real, especially when family etc are informed their loved ones have been murdered.
I hope more series will be released on DVD, well worth a watch.