Episode 3.10 of "" will see the second dark eclipse witnessed by the characters, as revealed on the episode's new preview. It shows some of the heroic characters possibly losing their power and abilities because of the powerful eclipse.
With the title "The Eclipse: Part 1", the episode revolves around Arthur who has succeed in reuniting Sylar and Elle. He then asks Sylar and Elle to find Claire for him. Meanwhile, in order to discover what Daphne has been hiding, Hiro, Ando, and Matt cooperate each other and follow her to her hometown in Lawrence, Kansas. At the same time, Nathan and Peter Petrelli travel together to Haiti in search of the only man that can stop their father from destroying the world.