Helen West of the Prosecution Service for the Crown was afraid of Mr. Logo, the defendant, and afraid of the dark as she as she descended from the car park. Rose Darvey was supposed to keep track of the case results. She thought the lawyers were congenital idiots. She was only nineteen. Helen's boyfriend was Geoffrey Bailey of the police.
Logo was a road sweeper. Logo was acquitted according to Helen West because one can't cross-examine a person who sings hymns. Logo's neighbors became forced to understand that there was no societal provision for dealing with someone half-mad.
A superior wants Helen to speak with the clerk, Rose, since all the young policemen are wild for her and are fightling over her. At some stage Rose and Helen develop a friendship. That part of the plot resolves half-way through the book in Rose's finding a suitable person among the police officers to love.
The story continues in a snappy and satisfactory way. The book is just about perfect. Regrettable circumstances are described ably and realistically in this police/legal procedural.