Then it starts a journey that will likely take it overseas or underground into a big pile of cash that nobody can find.

With the focus on Syria, also keep an eye on an unfolding economic meltdown in one of the world's most important economies: India.

A run on India's currency presages trouble in other emerging markets.

A crop of start ups with venture capital backing are trying to make Bitcoin more mainstream and easy to trade.

The Winklevoss twins are trying to set up a fund that will allow investors to trade Bitcoins as if they were stock.

First there was the rigging of the interest rate known as LIBOR. Now there may be collusion on currency exchange rates.

There will be new penalties for financial institutions that deal in Iranian currency, which should cause the rial to devalue further. But new sanctions on the country's car industry could be felt more acutely.

From the Turkish lira to the South African rand, many emerging market currencies are down as U.S. interest rates increase.

The Feds have accused Liberty Reserve of moving $6 billion for criminals involved in credit card fraud and Ponzi schemes by converting cash to virtual currency.