Light "acts" as Kira for the police to lure Misa into a trap.
Back in the present, the second Kira (Misa) releases a new video with a terrifying proposition: she wants to meet the original Kira and offers to "show each other our Shinigami". This mention of supernatural beings causes the usually stoic in a rare moment of genuine shock, realizing he is dealing with something that defies rational logic. Death Note Episode 12
Publicly reveals the existence of Shinigami, terrifying L and frustrating Light. Light "acts" as Kira for the police to lure Misa into a trap
Light gains insider access but falls under closer scrutiny by L. Death Note Episode 12
Reveals that Shinigami can die if they save a human they love.