Chicago real estate mogul Steven Good, head of the "largest real estate auction company in the nation," killed himself with a gun yesterday. He did deals with Trump. His motivation is a mystery:

Kane County Sheriff's Department spokesman Lt. Pat Gengler said authorities don't have any "concrete evidence if this had anything to do with his finances."...

Good, who was also an attorney, wrote a book, "Churches, Jails and Gold Mines: Mega-Deals From a Real Estate Maverick." According to Amazon.com, Donald Trump wrote the afterword.

The first chapter begins, "Our auction company is to the real estate business what Sotheby's and Christie's is the fine art and collectibles business." The book goes to say that as of its 2003 publication, the firm had sold 40,000 properties totaling $8 billion.

Yes, the commercial real estate market is bad, but who knows. Money is the obvious first place to look when a mogul does something like this during a down economy, but nobody knows. We hope, sincerely, that shame unto death isn't going to be the next corporate trend in America. Remember: don't kill yourself. [CNN]