How to Solve
the Perfect Crime
by John Foxjohn
John Foxjohn spent ten years working as
a police officer before quitting to fulfill a
promise he made to his dying mother
that he would go to college.

He never solved the perfect crime or near
perfect since they don’t actually exist,
but his experience as a former police
officer helped pave the way for the
murder mysteries he’s written—including
one voted by readers as the best in the

However, Foxjohn’s law enforcement
experience would play an even bigger role
in the preparations for writing his huge
true crime—Killer Nurse—the story of
Kimberly Clark Saenz, a DaVita nurse
accused of harming and murdering
patients. At first blush, the story seems
to be about another killer health care
provider. It turned out to be anything

Before Kimberly Clark Saenz, no one had
ever in history been accused, charged,
and convicted of murdering people with

Foxjohn is the first to say that writing
about it was a lot easier than
investigating it.  There’s an old saying, “It
takes a village to raise a child.” As it
turns out it takes many people in a police
department to convict someone of a near
perfect string of murders, and that is
exactly what the Saenz case turned out
to be.

The Lufkin Police Department had her for
aggravated assault and knew it. After all,
two witnesses saw her inject patients
with bleach, and the physical evidence
backed up what the witnesses said.
These patients actually lived, but others
had died. But that is where the village
came in. If it hadn't been for a young
female CSI tech who went way beyond
what she was supposed to do, and found
a critical piece of evidence that she
normally wouldn’t have found, the
likelihood is Saenz would have never been
investigated for the murders she

This was just one aspect of the
extraordinary efforts that had to take
place to convict her. Bleach is devastating
and causes excruciating pain, but once it
touches blood, it instantly attaches itself
to all the components in the blood and
becomes virtually impossible to detect.

Also, as the lead investigator found out,
there is not a forensics lab in the world
that could help. However, working closely
with the District Attorney, they broke
new ground with a lab in the U.S. they
thought might be able to help. That lab
belonged to the FDA—Food and Drug
Administration. Another agency that
proved invaluable was the CDC—Center
for Disease Control.

With the help of these agencies, plus the
U.S. Attorney’s office, and because of
the efforts of the people who saw a huge
problem but refused to let a serial killer
walk, Kimberly Clark Saenz is behind bars
for the rest of her life where she belongs.
Police Author
John Foxjohn
Viet Nam
Army Airborne
Retired teacher and coach - John
Foxjohn is now a multi-published author
who is extremely excited about his two
new books.  
Paradox - his first romantic
suspense, and
Killer Nurse - the true story
of convicted serial killer Kimberly Clark
Saenz, the Texas nurse who killed and
injured patients by injecting them with
Copyright © 2016  Barry M. Baker