I have quite a large personal collection of books, and people always ask me why I even bother with owning so many . My answer is that a good book is worth reading multiple times. In fact, with some books, it is absolutely necessary to read it twice in order to fully enjoy it for one reason or another. If you 're interested in a unique reading experience, I suggest the following five books for your own libraries.

1. "The Westing Game" by Ellen Raskin.

I've always been a fan of murder mysteries, and this was the very first one that I read in middle school. The 16 heirs to the fortune of the murdered man are gathered in Sunset Towers, where they're told that one of them is indeed the murderer and the only way to get the inheritance is to figure out "who dunnit" while they survive. They're all different ages and ethnicities and come from various walks of life. There's even, along with a murderer, a bomber and a thief.

I have read this book from cover to cover at least six times, if not more, and it never gets boring. This mystery is so well constructed that every time I read it, I pick up on something that I didn't the first time around. Just like any mystery, there is so much clever foreshadowing that I absolutely recommend reading it again.

2. "Because You'll Never Meet Me" by Leah Thomas.

The title of the book is true: Ollie and Moritz can never meet, because Ollie is allergic to electricity and Moritz has a pace maker. Despite this and the fact that Moritz is blind, the two of them become pen pals, but slowly yet surely get closer and closer.

Though their lives seem to be polar opposites, they might have more in common than either of them and the reader realize. After reading through all of their letters to each other the first time, I almost immediately wanted to go back and read through them all again, because the writing is so powerful. This is absolutely my favorite book of all that I've read, because of its nearly tangible emotions and beautiful descriptions. You will no doubt enjoy being the third pen pal if you give this book a look.

3. "Party" by Tom Leveen.

I've always loved books that tell the same story through multiple perspectives, and this book has 11 of them. Centered around the graduation party that everyone from Santa Barbra high school is going to, our 11 narrators came to the event for very different reasons.

However, all of their stories intertwine in ways that no one could have expected. As you read "Party" for the first time, you put the story together as you go, so you can only use the previous narrators to shape your opinion of the ones to come. When you read it again, you've already put together the puzzle pieces, so now you can more closely examine how they fit together. Just keep in mind the end narrators when you read the beginning ones.

4. "The Year of Secret Assignments" by Jaclyn Moriarty.

Also known as "Finding Cassie Crazy," this gem of a novel shows the development of relationships between three girls and two boys throughout the school year as they write notes, emails, letters, fliers, transcripts of court cases and diaries to each other. Plus, there's the one overenthusiastic yet unhelpful notebook that Lydia loves getting sarcastic with.

Though things between these young ones start off on the wrong foot, they all have to work together if they want to punish the boy covered in guilty glitter, while picking locks and setting off fake fire alarms and avoiding getting caught. This book is a joy to reread as it entrances you on your first, because you may not fully know how all the timelines mix together. Another thing is that the relationships develop so naturally that, once you get to the end, you may forget how every dynamic started, so it's fun to compare the beginning to the end and pick up on more of the tricky foreshadowing that slips by the first time.

5. "To Be Perfectly Honest" by Sonya Sones.

Sonya Sones has masterfully crafted her own style of writing where our main character's thoughts narrate the story in short poem-like chapters, and this work is no exception. While I have reread many of her books, this is the only one that you absolutely have to read again, as, contrary to what the title suggests, our narrator is anything but honest.

Throughout the course of the story, Colette will cut herself off and let you know that the last ten pages you just read didn't actually happen, but were instead just parts of her lies. As you get pulled into all of these lies when you're reading the first time, you'll have a new perspective on what she's saying and her reactions to things the second time through.