This is a very, very good album and a favorite of mine. Like with all of the AIO Albums, it teaches valuable life lessons.
However, the 2 part Episode "Castles & Cauldrons" may be too scary for the Pre-Teen crowd ( but you know what your child can handle better than I ). But, I will say this... "Castles & Cauldrons" is scarrier than the Secret Room Episodes!!! If it were left up to me, 12 year olds and up should be able to handle "Castles & Cauldrons".
The other episodes are fine and are highly enjoyable for any age. LOVE AIO!