The Butterfly Effect

Angela and Peter square off over how to prevent a seemingly unstoppable worldwide catastrophe. Sylar heads up an attack on the Company's main facility, but is shocked by what he finds on Level 5. While battling Elle, a dozen criminals with potentially devastating abilities are able to escape the facility. Meanwhile, Claire makes a discovery about her abilities; Hiro and Ando follow Daphne to Paris; Suresh's research, as well as his relationship with Maya, progress; and Matt finds a guide to lead him through unfamiliar territory.