Hana (Delirium, #1.5) by Lauren Oliver

Published February 28th 2012 by HarperCollins Publishers 

64 pages

The summer before they're supposed to be cured of the ability to love, best friends Lena and Hana begin to drift apart. While Lena shies away from underground music and parties with boys, Hana jumps at her last chance to experience the forbidden. For her, the summer is full of wild music, dancing—and even her first kiss.But on the surface, Hana must be a model of perfect behavior. She meets her approved match, Fred Hargrove, and glimpses the safe, comfortable life she’ll have with him once they marry. As the date for her cure draws ever closer, Hana desperately misses Lena, wonders how it feels to truly be in love, and is simultaneously terrified of rebelling and of falling into line.

My rating: 3 stars

If you want to understand Hana's character on Delirium, better read this book . I couldn't believe that Hana was the one who did it. 

Pandemonium by Lauren Oliver

Published February 28th 2012 by HarperTeen

 375 pages

I’m pushing aside the memory of my nightmare, pushing aside thoughts of Alex, pushing aside thoughts of Hana and my old school, push, push, push, like Raven taught me to do.The old life is dead.But the old Lena is dead too.I buried her.I left her beyond a fence,behind a wall of smoke and flame.

My rating: 4 Stars

The ending is a cliffhanger. It gave me a heart attack. I enjoyed the "Now" and "Then" set up.