As it turns out, Wall Street cut corners when it bundled homeowners' mortgages into securities that were traded from investor to investor. Now that banks are foreclosing on people, they're finding that the legal documents behind many mortgages are missing. So, what do the banks do? As Pelley explains in this video, some companies appear to be resorting to forgery and phony paperwork in what looks like a nationwide epidemic. Even if you're not at risk of foreclosure, there could be legal ramifications for a homeowner if the chain of title has been lost. Watch the "60 Minutes" report and listen to Pelley's discussion with "60 Minutes Overtime" editor Ann Silvio about the findings of his reporting team.