'Prison' term extended

Fox drama back for 4th season

Fox has picked up a fourth season of its action drama "Prison Break." The network has ordered 22 episodes of the show, which will resume its run in the fall.

Thirteen episodes of "Prison" aired this season. The show was one of several scripted programs interrupted by the WGA strike that will reset with a new production order. The most recent run averaged 8.2 million viewers and a 3.5 rating among adults 18-49.

Production on next season will begin in May and relocate from Dallas to Los Angeles, where Season 4's story line takes place.

A planned spinoff of the show is in development and will focus on a character that likely will be introduced next season.