Book · Thrillers and mysteries
The Locked Door
by Freida McFadden
Page count, estimated reading time and reading quiz: everything to know before you start The Locked Door, and the Vread challenge to get to the end.
- Pages
- 273
- Reading time
- ≈ 5 h
- Checkpoints
- 8
- Genre
- Thriller
Free on iPhone and Android.
How long does it take to read The Locked Door?
At 273 pages, The Locked Door is a medium-length book. Expect about 5 hours of reading to finish it, based on 250 words per page and an average reading speed of 230 words per minute. A fast reader will go quicker; a careful read (or reading in a second language) will take longer.
At 30 minutes a day, that is about 10 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 4 reading days. For a book of this length (250 to 399 pages), Vread readers who finish it take a median of 4.7 days between the first and the last checkpoint (Vread Reading Barometer 2026).
- 30 minutes a day10 days
- Vread median pace (72 pp./day)4 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 8 checkpoints
- Checkpoint 1, page 34
- Checkpoint 2, page 68
- Checkpoint 3, page 102
- Checkpoint 4, page 137
- Checkpoint 5, page 171
- Checkpoint 6, page 205
- Checkpoint 7, page 239
- Checkpoint 8, page 273
In Vread, The Locked Door is split into 8 checkpoints, one every 34 pages or so. At each checkpoint, a question covers the passage you have just read: a correct answer validates the step, and your progress moves forward like a training plan.
The challenge: validate all 8 checkpoints through to the last page. No giant quiz at the end, no summary to copy out: short questions along the way that prove the book was actually read. It also works as a reading quiz to check your understanding before a test.
Also available in French on Vread.
Illustrative example
What a checkpoint looks like
A short, precise question about the pages you have just read: a character, a place, a choice.
The answer is in the text: reply in the app.
This is not a question from The Locked Door: to avoid spoilers, the real questions stay in the app.
Answer in the app, one checkpoint at a time.
Summary, quiz, reviews: frequently asked questions
How many pages is The Locked Door?
How long does it take to read The Locked Door?
Is there a quiz on The Locked Door?
Where can I find a summary of The Locked Door?
More by this author on Vread
Read The Locked Door with Vread
Add the book to your library, read at your own pace in whatever format you use, and validate each checkpoint. Vread is free on iPhone and Android.
Take the challenge