The official Darker than Black site has posted a preview of the fourth episode of Darker than Black: Ryuusei no Gemini, "The Ark Lurches on the Lake..." The episode provides a sneak peek of some new characters Suou will meet on her journey to reunite with her brother, Shion.
Suou and Hei have escaped from Russia and head to Japan, where Shion awaits. Suou arrives in Sapporo, a city still bearing the scars of Heaven's War. There she meets a boy named Norio, who is fascinated by her and is determined to follow her around. As she runs from him, she finds herself saved by a transsexual named Lebanon.
The episode will air on October 30th.