6 Thrillers With Unbreakable Sibling Bonds

Loyalty and love are put to the test in the face of danger in these heart-pounding thrillers. Highlighting the lengths siblings will do to protect each other whether it’s from navigating dark secrets or unraveling chilling family secrets to planning the perfect murder, these books will keep you on the edge of your seat.
Everyone thought reckless, troubled Geraldine Monroe was the bad sister — especially when she fled town after her mother’s death twenty-five years ago.
But people don’t know the truth.
Marie Monroe knows. She was there for their father’s cruel punishments, the constant manipulation, the lies. Everyone thinks she’s the perfect daughter — patient and kind, and above all obedient. No one would suspect her of anything. Especially not murder.
Now Geraldine’s home again, and she and Marie have united in a plan for the ultimate revenge. But when old secrets and new fears clash, everyone is pushed to the breaking point . . . and the sisters will learn that they can’t trust anyone-not even each other.
Years later, still unable to live down the guilt surrounding what happened to her brother, Chris, and now with a child of her own to protect, Katie struggles to separate the real threats from the imagined. Then she gets the phone call: Chris has gone missing and needs his big sister once more.
Meanwhile, Detective Laurence Page is facing a particularly gruesome crime. A distinguished professor of fate and free will has been brutally murdered just hours after firing his staff. All the leads point back to two old cases: the gruesome attack on teenager Christopher Shaw, and the despicable crimes of a notorious serial killer who, legend had it, could see the future.
When Rose discovers that she cannot get pregnant, Fern sees her chance to pay her sister back for everything Rose has done for her. Fern can have a baby for Rose. She just needs to find a father. Simple.
Fern’s mission will shake the foundations of the life she has carefully built for herself and stir up dark secrets from the past, in this quirky, rich and shocking story of what families keep hidden.
Jane must either let Esme stand on her own two feet for once or swallow her fear and jump to her younger sister’s rescue–and her choice cleaves her life in two.
In one reality, Jane tells Esme to crash with a friend. Twenty-four hours later, her sister is missing. Tortured by regret, Jane dedicates herself to piecing together Esme’s life before her disappearance, unraveling a web of lies, broken relationships, and, finally, the truth.
In the other reality, Jane gets in the car and offers her less-than-grateful sister a ride. But while Jane hopes living together in their childhood home will be healing, Esme is aloof and increasingly reckless. The tension between the sisters builds until they are finally forced to reckon with the explosive secret from their past that could destroy their fragile bond–and both their lives.
But their childhood wasn’t the fairy tale everyone thinks it was. Miss Fairchild had rules. Miss Fairchild could be unpredictable. And Miss Fairchild was never, ever to be crossed. In a moment of desperation, the three broke away from Miss Fairchild and thought they were free.
Even though they never saw her again, she was always somewhere in the shadows of their minds. When a body is discovered under the home they grew up in, the foster sisters find themselves thrust into the spotlight as key witnesses. Or are they prime suspects?
My twin brother is the person I’m closest to. But now he frightens me.
We both have the same white-blond hair and clear blue eyes. All our lives people have stared at us. So we had to be there for each other.
Bryce tried to protect me from our dad. But when he died, I thought I was finally safe.
After the funeral, Bryce takes me aside: “Since Dad’s passing . . . well, it’s been going on for a few years now. I’ve been keeping a huge secret from you.”
Now I’m lying bruised and broken on a cold floor in a dark room. How I got here is the question. And what they want from me is insane . . .