The children's 'Unmask' title is a short juvenile hardcover (24 pages). The adult-oriented 'Unmask' books are much longer psychology or true-crime volumes, ranging from about 304 to 560 pages, and appear in hardcover or paperback.

The search results show two formats: hardcover and paperback.

The listings show a juvenile suggested age of 7–8 years and adult listings marked as 22 years and up.