Definitely, unless the series has no references to other books or episodes. For instance, I recently bought 'Dark River' in the Warrior Cats series, 'The Power of Three', and I refuse to read it until I get 'The Sight'- it's prequel. On the other hand, I have read every book of Redwall in a scattered order. The only books you need to read in order are probably 'Redwall' and 'Mattimeo'. As such, it depends, but I generally do so, as I'm a little bit OCD like that.
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