John Patrick "Jack" Ryan, Sr. is a fictional character created by Tom Clancy who appears in many of his novels and their respective film adaptations.
A new technologically-superior Soviet nuclear sub, the Red October, is heading for the U.S. coast under the command of Captain Marko Ramius. The American government thinks Ramius is planning to attack. Lone CIA analyst Jack Ryan has a different idea: he thinks Ramius is planning to defect, but he has only a few hours to find him and prove it - because the entire Russian naval and air commands are trying to find Ramius, too. The hunt is on!
When CIA Analyst Jack Ryan interferes with an IRA assassination, a renegade faction targets Jack and his family as revenge.
Agent Jack Ryan becomes acting Deputy Director of Intelligence for the CIA when Admiral Greer is diagnosed with cancer. When an American businessman, and friend of the president, is murdered on his yacht, Ryan starts discovering links between the man and drug dealers. As former CIA agent John Clark is sent to Colombia to kill drug cartel kingpins in retaliation, Ryan must fight through multiple cover-ups to figure out what happened and who's responsible.
