Remember, nothing vanishes without a trace!
If you're thinking about taking up a life of crime, better stick to shop-lifting. According to this author getting by with murder is harder than it sounds. And all those cute tricks you THINK you know to cover up the evidence are as useless as boobs on a bull.
Don't bother trying to wash the blood away. Luminol will show up even tiny spatters, which can then be tested to determine if it's blood. Wiping surfaces with a cloth doesn't destroy fingerprints completely. That requires strong bleach. And don't waste your time filing the serial number off the murder weapon. There are at least three methods to retrieve those numbers and the odds are not in your favor. Getting nervous?
The author compiled this information for the benefit of those who need an introduction to forensic science and to correct some of the mis-information that viewers pick up from television shows and movies. It's been so long since I watched TV (think DRAGNET) I'm no expert here.
I remember seeing small screen cops using handkerchiefs to open doors and picking up guns with a pencil stuck in the barrel. Both of these are no-no's and more likely to destroy evidence than to preserve it. Wearing gloves is the preferred technique, which explains why cops now seem to live in latex gloves. They're not just for body cavity searches anymore.
I was particularly impressed with the section on forensic photography, never having realized its scope and importance. I've read many classic detective stories, including Hilary Waugh's famous police procedurals. I guess the gruff, grizzled old police chief calling the local newspaper photographer down to take a few pictures of the body before it's moved is a thing of the past.
Going back even further than that, I recall stories that involved a matching pair of dueling pistols and the confusion of trying to figure out which one was used. Turns out the striation marks produced by a firearm are as individual as fingerprints.
There's a lot of information packed into this well-written book and some readers may want to skim and skip around a bit. I thought it was fascinating and I can't believe how much I learned from it.