A sex addict's carefully cultivated private life falls apart after his sister arrives for an indefinite stay.

Mona Gray is a 20-year-old loner who turned to math for salvation as a child after her father became ill. As an adult she now teaches the subject and helps her students through their own crises.

A car magnate watches his personal and professional life hit the skids because of his business and romantic indiscretions.

Armed men hijack a New York City subway train, holding the passengers hostage in return for a ransom, and turning an ordinary day's work for dispatcher Walter Garber into a face-off with the mastermind behind the crime.