The Prince of Risk by Christopher Reich

This is a fast-paced page-turner involving basically a plot by China to take over the world. Bobby Astor runs a hugely successful hedge fund. When his estranged father, the chief exec of the NY Stock Exchange, is murdered in front of the White House, Bobby is determined to find out what really happened. Bobby's ex-wife, FBI agent Alex Forza, is trying to stop a terrorist plot. Eventually, their paths end up on a collision course as time is running out. It's all very exciting.