Outside temperature is 70 degrees. A tap on a fax machine requires testing the line to check if it's the right suspect. Audio surveillance must be turned off whenever a privileged conversation takes place. Home invasion usually involves suspects who are the same race as the victim. More carjackings occur by luring the unsuspecting motorist over to assist a stopped vehicle than by attacks on drivers at stop lights.
Robbery usually has a higher clearance rate than burglary.
Searching the arson scene is from the area of most damage to least damage. Arson fires usually burn quicker and larger than other kinds of fires. Arson, like computer crime, requires the perpetrator to have some special skills. A mother cannot testify against a father in a child abuse case. More fathers abuse children than mothers.