Insurance agents who steal from clients can go undetected for years.
Jeanne and Anthony Trotta were in their 80s when they bought $150,000 worth of annuities in 1998 from Michael Minnehan, an insurance agent in their hometown of Milford, Mass. Minnehan told them the annuities would do better than a savings account. They might have, if the money hadn't been stolen.
http://www.forbes.com/forbes/2008/1208/152.html

