Death Note: Desu nôto - Season 1 Episode 4

Suspecting that Mark Dwellton met with Kira before his death, L plants cameras and listening devices in the houses of families Mark was following. Light quickly realizes this and formulates a plan to temporarily prove his innocence to the task force members. However, L's suspicions do not waver and he enrolls into Light's university in order to investigate him personally. Meanwhile, Misa becomes determined to find Light, having become a Kira supporter since the day Light punished her parents' murderer. After leaving a televised message asking the police to cooperate with Kira, Misa finds Light in his house and rushes to his room, unaware that L's cameras are still in place.