The Butterfly Effect
S3, E2: The identity of the shooter is revealed, throwing Peter and Matt into uncharted territory; Sylar declares war on the Company and attacks its primary facility, but finds more than he expected on Level 5.

S3, E2: The identity of the shooter is revealed, throwing Peter and Matt into uncharted territory; Sylar declares war on the Company and attacks its primary facility, but finds more than he expected on Level 5.