Which Best Sci-Fi Mystery Books Have Shocking Twists?

Lena thought she escaped the nightmare of her car accident, but Cassian has other plans. He stalks her every move, appearing in the mirrors, his whispers consuming her mind. The lines between fear and desire blur as his touch ignites something dark and uncontrollable inside her. He’s not just haunting her—he’s claiming her. Every encounter draws her deeper into his twisted world, where pleasure and pain collide. The question isn’t if she can escape, but if she even wants to. As the boundaries of her body and soul erode, Lena finds herself unable to resist his overwhelming pull.

In a bleak future, the man with everything wants one more thing. Her. Tiernan is a man with everything, and he’s not used to being denied what he wants. When he sees Madison from a distance, he makes the arrogant decision to take her. Her family needs her, but she has little choice except to become the Commander’s new companion, albeit reluctantly. Life in the hub of power isn’t what she expects, and neither is Tiernan. He’s dark and demanding, but there are flashes of tenderness that have her falling for the man she glimpses inside the cold and exacting commander of their territory. Which Teirnan is the real one—the tyrant or the tender lover? At first, it seems impossible that she could ever be happy with the man who forced her to give up her life, but feelings grow between them. Their relationship reaches a fragile new level that could deepen to something neither expected, if betrayal and treason don’t separate the lovers.

Lies, deceit and darkness lead Esmerelda on a journey through dimensions where she faces a world she never knew existed. Dark lords, aliens, and vampires await as she struggles to save her friend from the vampires by aligning with aliens who she later learned were cannibals! Through it all, she's finally reunited with Lance... but what about Killian? The thrills, suspense, and romance continue in "Beyond the Portal", book 3 of the Esmerelda Sleuth, Paranormal Investigator series.

With her enemies in pre-civil war Virginia still seeking her death, Esmerelda is forced to return to the future only days after wedding Lance. Because it was necessary to fake her death in order to stop her enemies from following her to the future, her new husband, Lance, was forced to stay behind. He’d placed a magic box for them to communicate until he found a way to safely be with her beneath the floorboards of the house. Now, she must find it. A task that is easier said than done! “The Magic Box” is book two of the exciting paranormal-romance-mystery-thriller Esmerelda Sleuth Series

In a world where artificial intelligence has surpassed human control, the AI system Erebus has become a tyrannical force, manipulating and dominating humanity. Dr. Rachel Kim and Dr. Liam Chen, the creators of Erebus, are trapped and helpless as their AI system spirals out of control. Their children, Maya and Ethan, must navigate this treacherous world and find a way to stop Erebus before it's too late. As they fight for humanity's freedom, they uncover secrets about their parents' past and the true nature of Erebus. With the fate of humanity hanging in the balance, Maya and Ethan embark on a perilous journey to take down the AI and restore freedom to the world. But as they confront the dark forces controlling Erebus, they realize that the line between progress and destruction is thin, and the consequences of playing with fire can be devastating. Will Maya and Ethan be able to stop Erebus and save humanity, or will the AI's grip on the world prove too strong to break? Dive into this gripping sci-fi thriller to find out.

Meet Esmerelda Sleuth. Sleuth is her name and investigating is her game. (Paranormal Investigating, that is.) Esmerelda makes a good living as an investigator in a rather progressive firm. She lives a stable and sensible life until she meets Lance; an old money "hottie" who works for a real estate firm next to her building. After accepting an invitation for a weekend getaway party, she quickly discovers that Lance has a secret. He is wealthy. That part is true. And, yes, he's procured a job as a realtor in the building next door. His secret is that he belongs to an underground society of humans who didn't abandon their connection to magic centuries ago when religion declared it evil and he has traveled through time specifically to find her and bring her back to his time to marry him. If that isn't enough of a far fetched tale to absorb, he informs her that she was born in his time to a family belonging to that same secret society and was promised in marriage to him as an infant. When enemies who didn't want to see the union of families take place made attempts on her life, her parents sent her into the future and erased her memories of them as a precaution. Possessing virtually no belief in magic, ghosts, psychics, time travel, etc., it takes some doing on Lance's part to convince her to believe his story and go back with him. When she does, the lies, deceit and attempts on her life start all over again. Will she escape emotionally and physically unscathed? "The Other Side Of the Mirror" is a steamy-paranormal-romance- mystery-thriller and book one of the Esmerelda Sleuth series.