A number of life insurance companies across the country do not pay benefits for a known deceased policy holder. 35 companies are currently under investigation -- while 25 more have agreed to pay settlements. Lesley Stahl has more. The number of mentally ill inmates continues to grow across the country. Bill Whitaker reports on what may be causing the uptick in the nation's prison systems -- as well as the unfortunate results. In the golden age of technology -- it is important to know that EVERYTHING is hackable. Sharyn Alfonsi sat in on a hackers convention -- where security researchers demonstrated the vulnerability of cell phones and mobile networks.