Book Planning & Story Development

How do you write a logline?

By the WriteLoom editorial teamUpdated 2026-05-28
Key facts
  • A one-sentence pitch: 25-50 words.
  • Names protagonist, conflict, stakes.
  • Template: "When [X], [protagonist] must [Y] before [Z]."
  • Used in elevator pitches, query openers, conference intros.
  • Most working novelists revise their logline 10-20 times.
Direct answer

A logline is a one-sentence pitch for your book that names the protagonist, the conflict, and the stakes — typically 25-50 words. The template that works for most loglines: "When [inciting incident], [protagonist with one defining trait] must [goal] before [stakes]." Used for elevator pitches, query openers, and conference introductions.

Chapter i·Why it matters

A working logline is the most-used pitch artifact in a writing career. Conferences, parties, agents, podcasters — they all ask "what’s your book about?" A 25-50 word logline that lands is the difference between "interesting" and "tell me more." Writers who haven’t written their logline default to rambling explanations that lose listeners.

Chapter ii·What to include

  • 25-50 words total.
  • Inciting incident named.
  • Protagonist with one defining trait.
  • Concrete goal.
  • Specific stakes.
  • A "test out loud" round: does it land in 15 seconds?

Chapter iii·Example

A debut thriller logline: "When a small-town detective discovers her mentor planted evidence in her father’s murder case, she must reopen the 25-year-old investigation before the mentor — now the county sheriff — buries the truth for good." 41 words. Names protagonist, inciting incident, goal, antagonist, stakes.

In WriteLoom

WriteLoom’s Plan studio holds your logline, premise, and comp set together — three pitches from one source.

See the Plan studio