https://www.npr.org/2023/05/22/ [login to see] /supreme-court-shadow-docket
The title sounds more like a thriller than a legal treatise. The Shadow Docket: How the Supreme Court uses stealth rulings to amass power and undermine the republic" — and the author, University of Texas law professor Stephen Vladeck, admits the term "shadow docket" is evocative.
Vladeck's book, written so it can be understood by the interested non-lawyer, focuses on a part of the court's work that until six or seven years was mainly viewed as pretty boring. That, however is no longer true, and today the emergency docket has come to be known as the shadow docket, a term coined in 2015 by University of Chicago law professor William Baude.