The Greater Good

A 9-1-1 call leads the team to a Wall Street broker's body. The caller works for the U.S. Attorney's office, alongside Gates' sister Elizabeth (Salli Richardson). The victim was their insider, investigating his boss. He made a $25 million wire transfer, given to him by his boss, and planned to take the money home to Venezuela. However, Elizabeth's partner believed the brokerage still needed investigating and killed him for "the greater good".