
It's 1950 and Frank Wallace is a respected judge.

He has a problem though - once in a while he gets the urge to go out at night into the streets and find someone and just kill them. Then, he goes home and writes down the details in a diary that he keeps.

He's done it before but a new wrinkle is that some of the murders he committed are blamed on other people - and those people end up in court before him.