All Our Yesterdays by Cristin Terrill

Title: All Our Yesterdays (All Our Yesterdays #1)

Author: Cristin Terrill
360 pages, September 3rd 2013, Disney Hyperion

Goodreads' synopsis: "What would you change?

Imprisoned in the heart of a secret military base, Em has nothing except the voice of the boy in the cell next door and the list of instructions she finds taped inside the drain.

Only Em can complete the final instruction. She’s tried everything to prevent the creation of a time machine that will tear the world apart. She holds the proof: a list she has never seen before, written in her own hand. Each failed attempt in the past has led her to the same terrible present—imprisoned and tortured by a sadistic man called the doctor while war rages outside.

Marina has loved her best friend, James, since they were children. A gorgeous, introverted science prodigy from one of America’s most famous families, James finally seems to be seeing Marina in a new way, too. But on one disastrous night, James’s life crumbles, and with it, Marina’s hopes for their future. Marina will protect James, no matter what. Even if it means opening her eyes to a truth so terrible that she may not survive it... at least, not as the girl she once was. Em and Marina are in a race against time that only one of them can win."

Split Second by Kasie West

>> THIS MIGHT CONTAIN SPOILERS FROM THE PREVIOUS BOOK <<

Title: Split Second (Pivot Point #2)

Author: Kasie West
368 pages, February 11th 2014, HarperTeen

Goodreads' synopsis: "Life can change in a split second.

Addie hardly recognizes her life since her parents divorced. Her boyfriend used her. Her best friend betrayed her. She can’t believe this is the future she chose. On top of that, her ability is acting up. She’s always been able to Search the future when presented with a choice. Now she can manipulate and slow down time, too . . . but not without a price.

When Addie’s dad invites her to spend her winter break with him, she jumps at the chance to escape into the Norm world of Dallas, Texas. There she meets the handsome and achingly familiar Trevor. He’s a virtual stranger to her, so why does her heart do a funny flip every time she sees him? But after witnessing secrets that were supposed to stay hidden, Trevor quickly seems more suspicious of Addie than interested in her. And she has an inexplicable desire to change that.

Meanwhile, her best friend, Laila, has a secret of her own: she can restore Addie’s memories . . . once she learns how. But there are powerful people who don’t want to see this happen. Desperate, Laila tries to manipulate Connor, a brooding bad boy from school—but he seems to be the only boy in the Compound immune to her charms. And the only one who can help her.

As Addie and Laila frantically attempt to retrieve the lost memories, Addie must piece together a world she thought she knew before she loses the love she nearly forgot . . . and a future that could change everything."

Hourglass by Myra McEntire

Title: Hourglass (Hourglass #1)
Author: Myra McEntire
390 pages, June 14th 2011, Egmont USA

Goodreads' synopsis: "One hour to rewrite the past . . .
For seventeen-year-old Emerson Cole, life is about seeing what isn't there: swooning Southern Belles; soldiers long forgotten; a haunting jazz trio that vanishes in an instant. Plagued by phantoms since her parents' death, she just wants the apparitions to stop so she can be normal. She's tried everything, but the visions keep coming back.
So when her well-meaning brother brings in a consultant from a secretive organization called the Hourglass, Emerson's willing to try one last cure. But meeting Michael Weaver may not only change her future, it may also change her past.
Who is this dark, mysterious, sympathetic guy, barely older than Emerson herself, who seems to believe every crazy word she says? Why does an electric charge seem to run through the room whenever he's around? And why is he so insistent that he needs her help to prevent a death that never should've happened?"

Tempest by Julie Cross

Title: Tempest (Tempest #1)
Author: Julie Cross
352 pages, November 3rd 2011, St. Martin's Press

Goodreads' synopsis: "The year is 2009. Nineteen-year-old Jackson Meyer is a normal guy… he’s in college, has a girlfriend… and he can travel back through time. But it’s not like the movies – nothing changes in the present after his jumps, there’s no space-time continuum issues or broken flux capacitors – it’s just harmless fun. That is… until the day strangers burst in on Jackson and his girlfriend, Holly, and during a struggle with Jackson, Holly is fatally shot. In his panic, Jackson jumps back two years to 2007, but this is not like his previous time jumps. Now he’s stuck in 2007 and can’t get back to the future.
Desperate to somehow return to 2009 to save Holly but unable to return to his rightful year, Jackson settles into 2007 and learns what he can about his abilities.
But it’s not long before the people who shot Holly in 2009 come looking for Jackson in the past, and these “Enemies of Time” will stop at nothing to recruit this powerful young time-traveler. Recruit… or kill him.
Piecing together the clues about his father, the Enemies of Time, and himself, Jackson must decide how far he’s willing to go to save Holly… and possibly the entire world."