What was the viewership of second , third , fourth , and fifth episodes of the show Once Upon A Time ?
Within 24 hours of NBC 's cancellation , CBS , whose production arm produces the series , renewed the show for a full , 22 - episode , sixth season , placing it in the Friday at 9:00 p.m. slot between fellow CBS in-house productions " Ghost Whisperer " ( which had a similar theme to " Medium " ) and " Numb3rs " .