Mulhern’s investigations take him on quite a journey, so if you like true crime books I recommend joining him on it and see what you think of the destination it reaches.

For the Love of Books

Article: Irish Serial Killer Documentary

Killarney Advertiser

There’s some really good investigative work in this book, with multiple interviews from the people who were there.

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Rosemarie Cawkwell, Blogger

This is a fascinating subject and the book is well written and incredibly interesting. There remains questions to be answered about Kelly but he's the only person who could ever give those answers.

Fans of true-crime stories will really enjoy this

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Random Things Through My Letterbox

As featured by

Ripperologist, October 2019

Listed in 'First Flush' feature

Books Ireland, September/October 2019

Book excerpt: 'The Secret Serial Killer' author visits Rathdowney as featured by

Leinster Express, 27th August 2019

Article: 'Naas author launches The Secret Serial Killer' as featured by

Leinster Leader, 27th August 2019

Article: 'Radio discussion on Secret Serial Killer book' as featured by

Leinster Leader, 13th August 2019

Article: 'The hunt for a Laois serial killer' as featured by

Leinster Express (online & print), 21st August 2019

Featured in

Police History Society

Sensational claims are set to emerge in a new book that an Irishman who went on to be one of Britain's most notorious serial killers may have committed his first murder in Ireland.

Irish Mail

Book extract/article: 'On the trail of Kieran Kelly – the Secret Serial Killer' + author Q&A as featured by

Leinster Leader, 25th June 2019

Author article: 'A KILDARE MAN IN LONDON: Hot on the heels of a serial killer’s trail' as featured by

Leinster Leader (online), 27th April 2019

Article: 'Ireland's Secret Serial Killer' as featured by

Sunday World (Eire), 26th May 2019 – words by Eamon Dillon

Article: 'Irish “Secret Serial Killer” responsible for up to 30 London murders' as featured by

Irish Central (online), 30th May 2019

Article: 'Book sheds new light on suspected Irish serial killer Kieran Kelly' as featured by

The Irish News (online), 30th May 2019

Article: 'An Irish Serial Killer? - Doc on One goes to print' as featured by

RTÉ (online), 28th May 2019

Featured in

The Sunday Buisness Post, 14/07/2019

As both a true crime and English detectives lover I was immediately drawn into this story. I had previously spent two years delving into the history of crime in London during the Victorian period and while Kelly’s crimes and the investigations surrounding them fall closer to the present, it was still something I couldn’t put down. Through eyewitness testimony, Kiernan Kelly’s case has been rebuilt with new evidence from Britain and Ireland, which is full of twists and turns that will keep readers hooked until the very end. The murders Kelly committed are seen as something that would not have wide appeal or interest. The fact that he killed those often identified as drunken vagrants seems to have limited the urge to investigate, which speaks to a cultural issue that arises within true crime topics. Kelly’s hidden crimes show that victims who are considered outside of mainstream society do not often receive the attention they deserve.

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The Nerdy Girl Express

It is an interesting book overall I thought, with a level of impressive research that makes it THE definitive study of a case that is destined to forever remain one that tantalises and intrigues the student of true crime.

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The True Crime Enthusiast

Mulhern uncovers a Jekyll and Hyde personality along with a host of missing and inaccurate police files.

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Publishers Weekly