Jan 2012 Undercover Boss leads Sunday night
The third episode of Undercover Boss season 3 was the #1 show on Sunday night with its largest audience since January 2011. The show had an average of 13 million viewers and saw a very strong rise from the first to the second half hour, peaking at more than 14 million.
Boss now moves to its new period of Friday at 8pm starting February 17th.
Further reading here