The ISBN of The Locked Room is 91-1-725301-2.
The ISBN of Locked in Time is 978-0316195553.
The ISBN of Locked Rooms is 0-553-80197-X.
The ISBN of Room One is 9780689866869.
The ISBN of The Murder Room is 0571218210.
The ISBN of The Upstairs Room is 9780690851274.
The ISBN of The Glass Room is 978-1590513965.
The ISBN of Giovanni's Room is 0-385-33458-3.
The Locked Room was created in 1972.
The ISBN of Elbow Room - book - is 0-262-04077-8.
The ISBN of Room at the Top - novel - is 0-09-944536-0.
The ISBN of The Cutting Room - book - is 1-84195-404-7.
The ISBN of The Beautiful Room Is Empty is 0-394-56444-8.