Bones (season 4)
The fourth season of the American television series "Bones" premiered on September 3, 2008, with a two-hour episode and concluded on May 14, 2009, on Fox. The show changed time slots again, airing on Wednesdays at 8:00 pm ET before moving to Thursdays at 8:00 pm ET in 2009. The season consisted of 26 episodes and averaged 10.8 million viewers. Episodes. The season premieres with its first two-part episode, "Yanks in the U.K." which was filmed on-location in the United Kingdom. Due to the season's extended episode count of 26 and multiple pre -emptions, Fox aired seven episodes throughout the month of April 2009, with new episodes airing on Monday and Wednesday, along with its regular timeslot of Thursday. This season sees the return of The Grave Digger, who was last seen in the second season. This time, The Grave Digger captures Booth. After Booth is rescued, the team discovers the true identity of The Grave Digger. <onlyinclude></onlyinclude> DVD and Blu-ray release. The fourth season of "Bones" was released on DVD (subtitled "Body Bag Edition") in region 1 on October 6, 2009, in region 2 on October 26, 2009 and  in region 4 on October 27, 2009. This was the first season to be released on Blu-ray, and was only released in region A alongside the region 1 DVD release. The region 1 DVD set only includes 22 episodes of season four, as the first four episodes of the season were made available as bonus episodes on the season three DVD set. While the Blu-ray release, and the region 2 and 4 versions include all 26 episodes of the season. Special features include two featurettes—"Androgyny: Playing Haru Tanaka" and "Squints in Training"; three extended episodes—"The Perfect Pieces in  the Purple Pond", "The Doctor in the Den" and "The Girl in the Mask". Also included are deleted scenes and a gag reel. References. General references