CBS is going the distance with FBI.

The network has picked up the Dick Wolf-produced procedural for a full season. CBS did not provide details on how many episodes the back order is for, though sources said it's for nine. FBI was picked up straight to series with an initial 13-episode order, with the additional nine bringing its total to 22.

The news comes days after producers Universal TV and CBS TV Studios replaced the showrunner on the freshman drama. The series has now had as many showrunners as it has aired episodes (three).

Greg Plageman was brought in to right the FBI ship following Craig Turk's departure in late July. Turk, who wrote the pilot, stepped down after creative differences on the procedural, which also underwent some recasting after the pilot. Person of Interest's Plageman returned to CBS to get the series back on track and exited to focus on development. Chicago showrunners Rick Eid and Derek Haas replaced Plageman as co-showrunners on FBI and will continue running NBC's Wolf-produced Chicago PD and Chicago Fire, respectively.

FBI, Wolf's second show for CBS after 1997's short-lived Feds and after the network originally developed and passed on Law & Order, ranks as CBS' most-watched new series with more than 13.6 million total viewers. It is the No. 2 new series of the season. The drama stars Missy Peregrynm, Jeremy Sisto and Sela Ward.

Wolf and his Universal TV-based Wolf Films banner executive produce the show.

FBI becomes the second fall drama to earn a full-season order, joining NBC medical drama New Amsterdam. (The CW has picked up five additional scripts for three of its new series: Charmed, All American and Legacies.)