There’s been a lot of crime in Pennsylvania lately, but last week two violent youths believed responsible for as many as 10 home invasions were arrested in Upper Darby, Pennsylvania.

In July 2007, The NY Times reported a terrible home invasion that cannot be forgotten. In a wealthy suburb near New Haven, Connecticut, the family of a prominent endocrinologist lost their lives in a fire set by two home invaders.

From the Dark Ages to modern times, alarm monitoring has undergone drastic changes over the years.