This is Book 12, Collection II, of the Million-Word Reading Project (MWRP) readers. It is suitable for learners with a basic vocabulary of 1,500 words.
Million-Word Reading Project (MWRP) is a reading project for ESL/EFL learners at the elementary level (with a basic vocabulary of 1,500 words). In two years, for about fifteen minutes each day, an ESL/EFL learner can read one million words, and reach the upper-intermediate level, gaining a vocabulary of about 3,500 words and a large number of expressions.

[Text Information]
Readability | 82.04
Total word count | 43406
Words beyond 1500 | 1856
Unknown word percentage (%) | 4.28
Unknown headword occurrence | 3.24
Unknown words that occur 5 times or more | 97
Unknown words that occur 2 times or more | 319

[Synopsis]
Someone has been murdered in a room, but the room is locked from inside—that is called a "locked-room mystery".
Tony Gillingham goes to visit his friend Bill Beverley, who is staying at the Red House with a group of friends. The owner of the Red House, Mark Ablett, is waiting for his long-lost brother Robert, the black sheep of the family. Shortly after the brother arrives from Australia, he is shot through the head inside the office. The room is locked from inside and Mark Ablett has disappeared. So Tony Gillingham decides to investigate. Gillingham plays Sherlock Holmes, while Bill plays his counterpart Doctor Watson....
This book is rewritten from "The Red House Mystery" by A. A. Milne (1882-1956), English author, who is best known for his books about the teddy bear Winnie-the-Pooh and for various poems. This book was published in 1922 and was Milne's only mystery.