I received this book for free from Publisher in exchange for an honest review. This does not affect my opinion of the book or the content of my review.

In the YA thriller The Third Twin, identical twins Lexi and Ava invent a fictional triplet they call Alicia. Unlike Lexi's relentless pursuit of academic perfection and her sister's pursuit of a good time, 'Alicia' is beautiful, smart, confident and the girl everyone wants to date. The twin's ruse is perfect until one night when the boy 'Alicia' is dating is found brutally murdered—and all evidence points to her. As Lexi frantically tries to unravel the mystery surrounding his death, the bodies of 'Alicia's' boyfriends start to multiply and it becomes a race to outwit the police as well as find the identity of the true killer before it's too late. After witnessing the aftermath of yet another murder, Lexi can no longer deny that all signs point to her sister's guilt. Enlisting the help of her old friend Zane, Lexi formulates a plan to catch the killer and clear her name, but planning gives way to disbelief as she discovers that in so many cases, people aren't always who they seem.

The Third Twin is a murder mystery and a high-intensity thriller about identical twin sisters, Alexa and Ava, who play with fire by pretending to have a third sister, Alicia.  Alicia is fun, beautiful, fashionable and extremely popular with boys. She goes on dates, gets invited to all the hot parties and is simply the coolest sister out of the three. The only problem is, Alicia doesn’t really exist. She’s made up. It’s always Ava and Alexa pretending to be Alicia, taking turns going on dates and fooling around with boys. When Alicia’s boyfriends start dropping dead and the cops come knocking on the door, looking for the third sister who doesn’t exist, the girls find themselves in a whole lot of trouble. Someone’s out to get them, will they find out who before it’s too late?-=

This is a plot-driven story. The characters are interesting enough to keep the readers engaged and captivated, but they’re not particularly memorable. I did, however, want to find out what in the world was going on. The mystery aspect of the story was supreme and executed nicely. I couldn’t tell who the evil culprit was. I had tons of theories and I suspected everyone. Well, almost everyone, because I was honestly surprised to find out who was behind the murders. The ending was very twisty and gasp-worthy. I was so sure I had it all figured out, but was taken aback by the final reveal. Omololu did a great job keeping the suspense going and she really managed to surprise me at the end. This book was extremely entertaining: fun, fast-paced and easy to read. I would recommend this book to anyone who likes mysteries/thrillers.