The plot has all the makings of a Hollywood action film –Manssour Arbabsiar, an Iranian-born car salesman living in Texas plans to assassinate the Saudi Ambassador to the United States. Manssour reaches out to the Mexican Cartel for help, but the cartel member he enlists is also a DEA source. The resulting investigation reveals a disturbing link between Manssour and the top echelon of the Iranian government. It’s a plot that if successful could have resulted in mass casualties and been the staging of a possible war. (thetvdb.com)