Castle S06E19 - The Greater Good
Castle (2009)
S06E19 The Greater Good
Episode Overview
Castle and Beckett delve into the murder of a Wall Street trader, but the investigation takes a startling twist when they learn that the victim was secretly working as an informant for the U.S. Attorney’s office. Things become even more complicated when they find out that the attorney in question is Elizabeth Weston, who happens to be Captain Gates’ estranged sister.