The 'Skulduggery Pleasant' series by Derek Landy has some demon - adjacent characters and concepts. It's a fun and action - packed series for young adults. The demons in this series are part of a larger world of magic and mystery, and the main characters have to face them as they go on their adventures to save the world.
The 'Mortal Instruments' series by Cassandra Clare also has demon - related content. It's set in a world where Shadowhunters fight against demons. The books are popular among young adults as they have a great mix of action, romance, and a complex world - building that includes different types of demons and how to combat them.
There is 'Holes' by Louis Sachar. While not strictly a police - focused story, there are authority figures and a mystery to solve that can be appealing to young adults. Also, 'The Westing Game' has a lot of mystery and detective - like elements that are similar to what you might find in police - related fiction. It can be a fun and engaging read for young adults.
You might enjoy 'The Guernsey Literary and Potato Peel Pie Society'. It's a charming tale of friendship and literature set in the aftermath of the war. The characters are very endearing and the story is full of warmth and humanity.
A good one is 'The Knife of Never Letting Go' by Patrick Ness. While it's mainly an adventure story, there are elements of a disease that affects the male population in this dystopian world. It makes the main character Todd's journey even more harrowing as he tries to escape from his town while dealing with the threat of this strange illness. Another is 'Scythe' by Neal Shusterman. There is a 'cloud' disease in it that plays a role in the world - building and the characters' actions.
For young adults, 'Deep and Dark and Dangerous' by Mary Downing Hahn is a good choice. It has a mystery element intertwined with swimming as the characters are near a lake and there are secrets related to swimming in it.
One interesting book is 'In the Shadow of Blackbirds' by Cat Winters. It's set during World War I and involves a girl who has a connection with the spirit world. She can see ghosts and has experiences that are similar to what mediums in fiction do. Also, 'The Graveyard Book' by Neil Gaiman. The main character, Bod, grows up in a graveyard and has some interactions with the dead, which has elements related to mediums in a more unique and fantasy - filled way. It's a great read for young adults.
The book 'The Vanishing Season' is about disappearances in a small town which has some elements of kidnapping. It's written in a way that young adults would find interesting, with a touch of mystery and a bit of a love story intertwined. Also, 'The Body Finder' series has some aspects of kidnapping in it. The main character has the ability to find dead bodies, and in some parts of the story, there are kidnappings that she helps to solve.
The 'Vampire Academy' series by Richelle Mead. It's about a school for vampires and their guardians. It has a lot of action and a bit of romance, which makes it appealing to young adults. The characters are well - developed, and the concept of night - active vampires is explored in an interesting way.
One great option is 'The Fault in Our Stars' by John Green. It's a touching story of young love and facing challenges.
One enlightening fiction book for young adults is 'The Hunger Games' by Suzanne Collins. It explores themes like survival, power, and sacrifice in a dystopian society. Another is 'To Kill a Mockingbird' by Harper Lee which teaches about racism and justice through the eyes of a young girl. Also, 'The Giver' by Lois Lowry is thought - provoking as it delves into a seemingly perfect but ultimately controlling society.
One popular young adults fiction book is 'The Hunger Games' by Suzanne Collins. It's set in a dystopian world where teenagers are forced to fight to the death in an arena. Another is 'Harry Potter' series by J.K. Rowling, which follows the magical adventures of a young wizard and his friends at Hogwarts. 'Twilight' by Stephenie Meyer is also well - known, telling a story of a girl who falls in love with a vampire.