Delirium

Every book in the Delirium series in reading order, all 7 of them, with what each one is about.

1. Delirium (2011)
2. Annabel (2012)
3. Hana (2012)
4. Pandemonium (2012)
5. Raven (2013)
6. Requiem (2013)
7. Alex (2014)