All investigators worry about disappearing evidence. A winter sleet storm can erase tire skid marks completely. A construction worker may be here today and gone who-knows-where after payday.

Then there is the dog-bite case. “Biting Billy” gets loose for the tenth time, but this time the attack causes serious injuries. How quickly can the owner remove the “Beware of Bad Dog” sign? And how convenient it is that Billy suddenly goes on vacation to Grandma’s house somewhere in Arkansas!

Call the authorities, obtain medical attention, and then contact a personal injury attorney. Get a legal team on your side.