It appears that a Monday night Fox drama may be locked away for good. According to The Hollywood Reporter, Prison Break might be at the end of its run this season.
It seems that the cast was told that the filming schedule was to be extended for two additional episodes, which may in fact turn out to be the series' final two episodes. The writers haven't pitched ideas yet for these episodes, but it seems they may not even air at all.
The network has not been cleared to air these episodes as of yet, and although negotiations are under way, but the episodes could be used for a two-hour event in the fall, or could be on the DVD.
It seems unlikely that the additional episodes will be tacked onto this season, as the shows ratings are in decline and the final six episodes of the 22-episode order weren't seen on Fox's midseason schedule.