Undercover Boss' trip to Boston Market drew 9.86 million total viewers on Friday night, inching up 4 percent week-to-week to net the CBS series' largest audience of the season.
The Boss matched its previous demo rating of 1.9, tying Shark Tank for the nightly win.
Rounding out CBS' night, CSI: NY (10.4 mil/1.5) dipped a tenth, and Blue Bloods…