Father and Son

 Father and Son is the 2nd chapter of Volume five and 36th chapter overall.

Plot
Rem is seen with another human using the Death Note to kill criminals.

After 50 days, Soichiro is still confined to his cell, refusing to come out until his son is exonerated. Light still begs to be let go, and Misa still believes that she is being held by a stalker. However, L still refuses to believe that Light is not Kira, and he still has not told Light that the killings have resumed during his confinement. Aizawa pressures L to let Light go, and L agrees only after he gets Soichiro to help him in his plan.

Light and Misa are led to a car that is being driven by Soichiro. Light asks his father if they’re being released, but he answers that they are being executed. Light begs for his life, but Soichiro tells him that he is going to kill them both himself. Soichiro stops the car and pulls out a gun. He pulls the trigger, but it is a blank. L watches the whole incident from a camera. He deduces that because neither Light nor Misa killed Soichiro when they believed that he would kill them, this is enough to end their confinements to the relief of Soichiro.

However, L is still not convinced that Light is not Kira, so he has arranged it so that he is together with Light 24 hours a day.

Conception
The chapter title refers to Light and Soichiro. Ohba said that he had trouble creating some of the chapter names for a lot of chapters and so he retrospectively wondered if "perhaps" he did not put enough thought into the chapter names.