Several months ago, Clark told you about R. Allen Stanford, a Texas businessman who allegedly stole $7 billion through the sale of off-shore CDs. These CDs were supposed to be ultra-safe and have higher returns than you could get elsewhere.

The money that people handed over to Stanford supposedly went into island accounts, like those at his self-operated Bank of Antigua. But the allegations are that it really just went into his pocket as part of a Ponzi scheme, according to The Wall Street Journal.

So far the feds have pinned $1.6 billion on Stanford himself. $1.1 billion is "completely unaccounted for," while another $5 billion has been "lost," according to the Justice Department.

And, remember, we're talking about a guy who had a fleet of jets. Not a single jet, a fleet!

Here's all you need to know: If you ever get a pitch about super-safe off-shore CDs, the odds are it's not gonna end well -- even if it is a legit opportunity.

The interest rate you're promised may get eaten up with currency fluctuations; the bank may go insolvent, in which case there's no FDIC to help out; or the promises could constitute an outright scam!

So be careful out there whenever you're promised higher rates than the market generally bears.