Dead On Target
Franklin W. Dixon
 Joe Hardy's girlfriend, Iola Morton, is caught in a car bomb and dies. Joe is unable to believe it. The brothers begin their investigation. They meet a person who calls himself the "Gray Man," from a government agency called "The Network." Frank and Joe take his help to get to the person who planted the bomb. Soon they learn that it is not a person, but a group of terrorists who call themselves "Assassins." Joe vows to kill them. As the story progresses, some Assassins are killed in encounters while others escape. They come to know that the person who killed Iola is a member of The Assassins named Al-Rousasa. When the book is about to end, Frank, Joe, Chet (who is Iola's brother) and their other friends begin searching a shopping mall when they learn that the Assassins plan to kill a presidential candidate giving a speech in Bayport. Soon, Joe and Frank have a fight with Al-Rousasa at the top floor. The fight ends with Al-Rousasa falling to his death, and Joe remembers what he had been told - "Nobody takes an Assassin alive."