A fully searchable edition of the largest body of texts detailing the lives of non-elite people ever published, containing 197,745 criminal trials held at London's central criminal court. 

https://www.oldbaileyonline.org/

Murderpedia

Murderpedia is a free online encyclopedic dictionary of murderers and the largest 
database about serial killers and mass murderers around the world.

http://murderpedia.org

UK Missing Persons Unit

Says our thriller writer, author Helen Callaghan, "It's the little details about the victims that are most affecting and really make you think. So I often visit here too: UK Missing Persons.  The lists of possessions, tattoos, etc get me every time."

https://www.missingpersons.police.uk

Says Helen, "The other place I use is the Suzy Lamplugh Trust as they have great insights and advice into stalking and threat."

Suzy Lamplugh Charity

https://www.suzylamplugh.org

"The other thing for crime research...