The folks at Crunchyroll have had the subtitled side of D.Gray-man on their service in partnership with Funimation for awhile with the 103 episodes available in subtitled form. They also had the first two seasons available in dubbed form on that. Now, the service has added the third and fourth season dubs which make up episodes 67 through 103 to the service, giving fans a lot more choice.
The series is based on the manga from Katsura Hoshino that began in 2004. It originally kicked off in Shounen Jump and then moved to Jump SQ back in 2009. It’s currently up to 25 volumes total, which Viz Media has released in North America in full.
Plot Concept: Toward the end of the 19th century, Allen Walker officially joins the organization of Exorcists that destroys the beings known as Akuma—mechanic weapons made by the Millennium Earl with the suffering souls of the dead. Allen has both a cursed eye and an anti-Akuma weapon as an arm, bearing the power of “Innocence,” a gift given to him as an apostle of God. Allen, along with his fellow Exorcists, must put a stop to the Millennium Earl’s ultimate plot that could lead to the destruction of the world and all who live on it.