Ages, my estimate. There is no graphic sex or violence (beyond the level in "The Shop"), although there is certainly mention of 'adult' matters (as in a certain amount of romance) and some grimness in places as one might find in a murder mystery novel. The use of language (e.g. level of vocabulary; I don't mean "bad language" because I don't recall any of that) I would place around the same level as say Tolkien, C.S. Lewis or Randall Garrett for understandability (that is to say that I would have been happy reading them by age 12 at least). In general I would say that they would not be unsuitable for teenagers, although they aren't "young adult" books in the sense the publishers generally use the term (most of the protagonists are adult, not teenage or younger).
In film classification terms I'd say PG to <a href='http://www.bbfc.co.uk/classification/c_12.php>PG-12</a>.
no subject
Ages, my estimate. There is no graphic sex or violence (beyond the level in "The Shop"), although there is certainly mention of 'adult' matters (as in a certain amount of romance) and some grimness in places as one might find in a murder mystery novel. The use of language (e.g. level of vocabulary; I don't mean "bad language" because I don't recall any of that) I would place around the same level as say Tolkien, C.S. Lewis or Randall Garrett for understandability (that is to say that I would have been happy reading them by age 12 at least). In general I would say that they would not be unsuitable for teenagers, although they aren't "young adult" books in the sense the publishers generally use the term (most of the protagonists are adult, not teenage or younger).
In film classification terms I'd say PG to <a href='http://www.bbfc.co.uk/classification/c_12.php>PG-12</a>.