About the book: 1988 / At 19:30, the FBI receives a message that the assassination of the US President is being prepared. At 20:20, an informant learns the planned date of the assassination attempt and the participation of one of the senators in the conspiracy. At 21:30, three out of four who know about this are killed. The surviving FBI agent Mark Andrew is faced with questions about what to do, how to dispose of the information? After all, until hour "X" is a little more than six days.