The following cases of murder and manslaughter for 2012 remain unsolved. Can you help?
One of those victims was Pamela Wheeler, a 76 year-old widow found dead at her home in Thamesmead, south London, after a suspected burglary.
In total there are 11 victims where nobody has been charged by police or detained overseas on a warrant. This number is highly likely to decrease as investigations continue.
Contact Crimestoppers on 0800 555 111.
This post is updated when cases change status (last update January 30, 2013)