Intoxication (As the Darkness Falls) by Tim Kizer

For the fans of Stephen King and Dean Koontz...

How do you force a confession out of a coworker trying to poison you? Do you kill those who dismiss your fears and believe you are paranoid? What do you do if you start questioning your own suspicions--and sanity--as you take the law into your hands?

In this disturbing tale of derangement, a young psychopathic woman is slipping into madness as she fights an enemy that may exist only in her imagination. She has to resort to desperate measures when she realizes that a gun, security cameras in her apartment, and constant vigilance will not be enough to survive.



Bonus: "Hitchhiker" by Tim Kizer, the first entry in the As the Darkness Falls series.
From description:
When a serial killer hitches a ride one sunny day in a beautiful California valley, he does not suspect that he may have met his match, who is dead set to take another life. The battle of wits begins and only the most devious mind will survive.

Good Reads Summary

This a book that demands attention to detail and events in the book or else the reader will not be able to follow.  This is a novel where there are many unanswered questions and the reader may be left with the question "What was reality and what was only in the main character's mind?"  In the horror genre, this can be the mark of a good author.  The reader should not be able to guess the events before they happen and be able to figure out the ending.  This is a super fast-paced book, the reader's interest will be captured and held throughout the novel.  There are two novelettes in this book, the reader will find both equally fascinating.  The main characters are paranoid and tend to make a mountain out of a mole hill.  The first tale is more about jumping to conclusions while the second warns that for every evil there is something or someone out there even more evil.  The endings are very original and will take the reader by surprise.  This novel is recommended for adult readers who enjoy the horror genre.

4 stars