The Book of Judges (Shoftim שופטים) consists of three distinct parts:
The Introduction (1:1–3:10 and 3:12) giving a summary of the book of Joshua.
The Main Text (3:11–16:31), discussing the five Great Judges, Abimelech (Judges), and providing glosses for a few minor Judges.
The Appendices (17:1–21:25), giving two stories set in the time of the Judges, but not discussing the Judges themselves.