a book which is about a murder and in which the identity of the murderer is kept a secret until the end
whodunnit
a specific dialect used by certain profession
jargon
something very successful, especially a very successful book or film
blockbuster
an important moral, social or political idea that a book, speech, etc. is trying to communicate
message
humour in the face of a bad situation
wry humour
an alphabetical list of the special or technical words used in the book, with explanation of their meanings
glossary
a book that is nice to read in bed
bedtime reading
used for saying you should pay particular attention to the information that follows
NB (nota bene)
text in a formal agreement that is printed smaller than the rest of the text, sometimes in the hope that it will not be noticed
small print
a book which gives you info about how to do smth, especially how a machine works
manual