Outside forces and new faces drive the "Heroes" into different directions -- George Takei, Christopher Eccleston and Jessalyn Gilsig guest star -- Chased by unknown assailants, Hiro's search for the sword takes a turn when his father appears. A cleaned up Isaac dedicates himself to stopping New York's destruction -- and Peter. Claude, an invisible man with a mysterious past, might have something to teach a would-be hero. D.L. struggles with new family responsibilities as Matt opens up to his wife Janice. H.R.G. focuses on his murderous captive, Sylar. Meanwhile, after seeking out the Haitian, Claire secretly embarks on a search for her true birth parents. While working to find those on "the list," Suresh receives a surprising visitor.