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A predator is prowling the highways.


He is a hunter, a mountain of a man who preys on those weaker and in need of help, offering a smile and assistance before abusing and killing them for his own sick pleasures.


The call him “The Good Samaritan Killer”, and he has an entire city living in fear.


As the bodies pile up, it is up to Katy “The Green Hornet” Green and her partner Johnny “Kato” Cato to catch this despicable killer.

106 pages, Paperback

First published January 1, 2011

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Gene O'Neill

120 books35 followers

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5 stars
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Displaying 1 - 9 of 9 reviews
Profile Image for Jonathan Stewart.
79 reviews7 followers
October 10, 2017
Everything Gene ONeill writes is excellent. Good to see Double Jack come together as a trilogy with the others in the series.
Profile Image for Jimmy Tam.
12 reviews25 followers
July 26, 2018
Great killer book. Look forward to next Katy books.
Profile Image for Michael Flores.
55 reviews27 followers
June 8, 2018
Enjoyed this opening book by Gene O'Neill in the KATY GREEN files, gripping, dark, smart. First in the series, and look forward to the following!
32 reviews1 follower
July 25, 2018
Great book. This author Gene O’Neill has been writing for a long time and Ive read his books before.
Profile Image for Ian Welke.
Author 26 books82 followers
October 12, 2018
This book has this excellent throwback feel to the pulp hardboiled stories, and I love the use of the comic strips between stories along with the crime notes. Great stuff!
Profile Image for Geoff.
509 reviews7 followers
May 3, 2012
This was an interesting little novella of two reoccurring characters from Gene O'Neill, the homicide detectives Katy Green and Johnny Cato nicknamed 'The Green Hornet and Kato' by the local press. What we have here is a serial killer that is attacking and killing women on the local freeways outside Sacramento. We get the perspectives from the victims, the detectives, and from the killer himself which helps round out what is happening from each character point of view. This was a fast passed and entertaining read which I read in one day. So it gets props for catching and holding my interest, but it is just a standard crime story and I wouldn't say there was anything spectacular about this tale, but I still enjoyed the read.
Profile Image for Anita Patel.
31 reviews7 followers
July 24, 2021
Fun, gritty read, throwback-retro nod to pulp hardboiled stories. Detective thriller searching for an evil serial killer.
Displaying 1 - 9 of 9 reviews

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