This is a book about reading a book,
which turns into a different book.
But it all ends happily!
A book within a book.
A funny story about the one time Commander Vimes read "Where's my Cow?" To his son and decided to turn it into "Where's my Daddy?".
Cute story, but I thought there would be an actual book. This was the most expensive book on the e-shelf, and only 33 pages long.
Excellent tie-in to Pratchett's "Thud" for all ages!