USA Network has granted In Plain Sight a final eight episode pick-up, which will air Spring 2012 and constitute the final season of the popular show.

In Plain Sight's fourth season ended Sunday August 7th, on a positive note with this season's finale rising 6% over last year's finale. The season average for the series brought 4.9 million viewers and double-digit gains in major demos.

Mary McCormack stars as U.S. marshal Mary Shannon, assigned to the Albuquerque Wit-Sec (witness protection) program. She works with her partner, marshal Marshall Mann (he's a Marshal and his name is Marshall) to keep federal witnesses safe and well-hidden all the while trying to deal with her own dysfunctional family which, mirroring Mary McCormack's own pregnancy has been barreling along with an unwed mother story-line for Mary Shannon.

Regulars Fred Weller (Marshall Mann), Paul Ben-Victor (Stan McQueen) and Rachel Boston (Mann's girlfriend Detective Abigail Chaffee) are all also coming back for the final run.