A.T.O.M.

Critical Mass (2x16)

Air date: Dec 23, 2006

Vinnie "The Mass" Rossi returns -- now a molten magma man -- bringing freak volcanic rifts all over the city. The reason behind his appearance? Lioness. On a side note, the extremeness of Hawk and Shark's snow fun causes $97 million in damages, which the city expects the two to pay.