Murderers in Barnsley who were never brought to justice feature in a new book.
Scott Lomax, 30, is the author of Unsolved Murders in South Yorkshire.
The book features ten cases dating between 1851 and 1982 and include the death of a gangster named Mark Scott in Barnsley in 1931 and the murder of Lily Stephenson in Barnsley in 1962.
Early chapters include cases of historic interest where killers certainly went to their graves safe in the knowledge they had got away with murder.
Cases also include suspicious deaths which left detectives in South Yorkshire baffled, but which were, Scott says, acts of callous murder not recognised as such due to police opinions and practices in those days.
There are also cases of clear murder such as a man shot in the head during the Victorian period, whose killer was never identified.
Cases include the case of John Wortley, murdered for less than £70 in a city centre multi-storey car park; Anne Dunwell who was abducted, sexually assaulted and left dead at the foot of a dung hill and Terivia Cameron, a disabled woman who was strangled in her Sheffield home which was then set ablaze.
Scott said: "For some of these cases there is the chance that someone has information which, despite the passage of decades, could lead to one or more individuals standing trial for murder.
"I hope this book will be well accepted by those who are interested in true crime but I hope it will serve a more important purpose; by raising awareness of some of these awful crimes it is my hope that people may come forward with new information.
"Justice can still prevail for some of these cases."
The book is published by Wharncliffe Books, an imprint of Pen and Sword Books and can be ordered direct from the Pen and Sword Books website, priced £12.99.