Twice read a series with more than 3 books

[Lana, Twice Read]

If you've read a series twice with more than 3 books recommend the series for everyone to enjoy (:

[Nique]

So besides Harry Potter of course.... Iron Druid By Kevin Hearne and Harry Dresden Series by Jim Butcher

[Cyn]

Percy Jackson series by Rick Riordan
Daniel X series and Maximum Ride series by James Patterson
The Secrets of the Immortal Nicolas Flamel by Michael Scott
A Series of Unfortunate Events by Lemony Snicket
Pendragon series by DJ MacHale
Charlie Bone series by Jenny Nimmo

All great series I kept rereading as a child :3