危机边缘 (第四季)

《危机边缘》第四季，美国科幻电视剧，是在讲述发生在美國國土安全局的監督下的一個以马萨诸塞州波士頓為據點的聯邦調查局邊緣科學部的故事。本片由J·J·艾布拉姆斯创造，第四季于2011年9月23日开始在FOX播出。 Gorman, Bill. Friday Final Broadcast TV Ratings: No Adults 18-49 Adjustments, Plus 'Fringe' & 'A Gifted Man' 15 min. Ratings. TV by the Numbers. September 26, 2011 [September 26, 2011]. （原始内容存档于2012-04-06）.  Seidman, Robert. Friday Final Broadcast TV Ratings: 'CSI: NY,' 'Kitchen Nightmares' Adjusted Up; Sorry 'Fringe' Fans, No Adjustment for You. TV by the Numbers. October 3, 2011 [October 3, 2011]. （原始内容存档于2012-04-06）.  Gorman, Bill. Friday Final Broadcast TV Ratings: 'Kitchen Nightmares' Adjusted Up; No Adjustments To 'Fringe,' 'Nikita,' 'A Gifted Man' Or Any Other Originals. TV by the Numbers. October 10, 2011 [October 10, 2011]. （原始内容存档于2012-04-06）.  Seidman, Robert. Friday Final Broadcast TV Ratings: 'Blue Bloods,' 'Supernatural' Adjusted Up; 'Nikita,' 'A Gifted Man' Adjusted Down. TV by the Numbers. October 17, 2011 [October 17, 2011]. （原始内容存档于2012-04-06）.  Seidman, Robert. Friday Final TV Ratings: 'Chuck,' 'Supernatural' Adjusted Up. TV by the Numbers. November 7, 2011 [November 7, 2011]. （原始内容存档于2012-04-06）.  Gorman, Bill. Friday Final TV Ratings: 'Grimm' Adjusted Up; 'Extreme Makeover: Home Edition' Adjusted Down. TV by the Numbers. November 14, 2011 [November 15, 2011]. （原始内容存档于2012-08-30）.  Gorman, Bill. Friday Final TV Ratings: 'CSI:NY,' 'Dateline: NBC' Adjusted Up. TV by the Numbers. November 21, 2011 [November 21, 2011]. （原始内容存档于2012-04-06）.  Gorman, Bill. Friday Final TV Ratings: 'Supernatural' Adjusted Up. TV by the Numbers. January 17, 2012 [January 18, 2012]. （原始内容存档于2012-04-06）.  Seidman, Robert. Friday Final TV Ratings: 'Kitchen Nightmares,' 'Supernatural' Repeat Adjusted Up. TV by the Numbers. January 23, 2012 [January 23, 2012]. （原始内容存档于2012-04-06）.  Gorman, Bill. Friday Final TV Ratings: 'Dateline' Adjusted Up; 'Shark Tank' Adjusted Down; No Adjustments For 'Chuck' Finale Or 'Fringe'. TV by the Numbers. January 30, 2012 [January 31, 2012]. （原始内容存档于2012-04-06）.  Seidman, Robert. Friday Final TV Ratings: 'Fringe,' 'Supernatural,' 'A Gifted Man,' 'Who Do You Think You Are?' Adjusted Up. TV by the Numbers. February 6, 2012 [February 6, 2012]. （原始内容存档于2014-11-20）.  Gorman, Bill. Friday Final TV Ratings: 'Supernatural,' 'A Gifted Man' Adjusted Up. TV by the Numbers. February 13, 2012 [February 13, 2012]. （原始内容存档于2012-02-15）.  Seidman, Robert. Friday Final TV Ratings: 'Nikita' Adjusted Down, 'Supernatural' Adjusted Up. TV by the Numbers. February 21, 2012 [February 21, 2012]. （原始内容存档于2012-02-25）.  Gorman, Bill. Friday Final TV Ratings: No Adjustments To 'Fringe,' 'Grimm' Or Any Other Original Episodes. TV by the Numbers. February 27, 2012 [February 27, 2012]. （原始内容存档于2012-06-09）.  Kondolojy, Amanda. Friday Final TV Ratings: Final NCAA Game Ratings; No Adjustments for 'Fringe', 'Nikita' or 'Supernatural'. TV by the Numbers. March 26, 2012 [March 27, 2012]. （原始内容存档于2012-05-04）.  Bibel, Sara. Friday Final TV Ratings: No Adjustments for 'Fringe,' 'Grimm,' 'Nikita' or 'Supernatural'. TV by the Numbers. April 2, 2012 [April 3, 2012]. （原始内容存档于2012-09-02）.  Bibel, Sara. Friday Final TV Ratings: 'CSI:NY' Adjusted Up, 'Dateline' Adjusted Down. TV by the Numbers. April 9, 2012 [April 9, 2012]. （原始内容存档于2016-03-04）.  Bibel, Sara. Friday Final TV Ratings: No Adjustments for 'Fringe,' 'Grimm' or 'The Finder'. TV by the Numbers. April 16, 2012 [April 16, 2012]. （原始内容存档于2016-03-04）.  Kondolojy, Amanda. Friday Final TV Ratings: 'Grimm', 'Supernatural' Adjusted Up; '20/20' Adjusted Down. TV by the Numbers. April 23, 2012 [April 23, 2012]. （原始内容存档于2016-03-03）.  Bibel, Sara. Friday Final TV Ratings: 'Supernatural', 'CSI:NY', 'Blue Bloods' Adjusted Up; 'Fringe' Adjusted Down. TV by the Numbers. April 30, 2012 [April 30, 2012]. （原始内容存档于2012-06-13）.  Kondolojy, Amanda. Friday Final TV Ratings: 'Shark Tank', 'Undercover Boss', 'Grimm', and 'CSI:NY' Adjusted Up. TV by the Numbers. May 7, 2012 [May 7, 2012]. （原始内容存档于2016-06-10）.  Bibel, Sara. Friday Final TV Ratings: 'Shark Tank', 'CSI:NY', 'Who Do You Think You Are' Adjusted Up; 'Primetime: What Would You Do?' Adjusted Down. TV by the Numbers. May 14, 2012 [May 14, 2012]. （原始内容存档于2016-03-04）.