Tempest by Julie Cross

19-year-old Jackson Meyer can time travel.  Not much, usually just back a few hours or days.  And when he does go back, nothing he does actually impacts the future - no one remembers interacting with him if it happened on one of his jumps, if he hurts himself he isn't seriously damaged when he gets back, and if he does something on one of his jumps, like break a window, that thing is undone when he gets back to the present.  It's not really serving a purpose, but he's having fun experimenting, and keeping it a secret from everyone but his science genius friend who is helping him figure out why it's happening and how to use it.  At least it is all fun until some people who also appear to be able to "jump" back in time show up at his girlfriend's college dor, attempt to kidnap Jackson, and kill his girlfriend in the struggle.  Now Jackson has jumped back 2 years, farther than he's jumped before, and no matter how hard he tries, he can't get back to his "real" time.  And the Enemies of Time are still after him.

Ruby Red by Kerstin Gier

1st in Ruby Red series.  Sequel is Sapphire Blue.  First published in Germany.

Gwen is 16 and lives with her mum, siblings, grandmother, aunt and cousin in an upperclass London neighborhood.  Her extended family doesn't pay much attention to her, focused on her cousin, believed to be the carrier of the time-travel gene that runs through her family and sure to show up very soon in the form of an abrupt trip to somewhere in the past.  But all is not as it seems.  Since a mathematical formula had worked out that Gwen's real birth  date was the birth date of the next time traveler, and her cousin was also born that day, Gwen's mum and (late) father secretly falsified her records to indicate Gwen was born the day before, allegedly in the hopes that she would be able to live a normal life (and since she was born at home with a midwife, no one was the wiser.

Insurgent by Veronica Roth

Sequel to Divergent

Tris, now on the run as war erupts, attempts to figure out what information is so vital, or so dangerous, that some factions would destroy others just to contain it.  

Crossed, by Allie Condie

Sequel to Matched.

Three Thieves series, by Scott Chantler

Book 1:  The Tower of Treasure:  Dessa, a 14-year old acrobat in a traveling circus, gets lured into helping Fisk, the scheming troupe juggler, and Topper, the gentle strongman, rob the royal treasury when she decides it will help her learn more about the mysterious man who kidnapped her twin brother several years before.  Caught in the act, they are able to escape from the tower prison but are followed by the grasping Queen's honorable, duty-bound captain of the guards, Drake.  Graphic novel, good for older elementary and middle school - mysteries, fantasy, adventure readers.

  Book 2:  The Sign of the Black Rock:  After escaping from the royal prison, Dessa, Fisk and Topper flee to the coast, where they seek shelter at an inn from a ferocious storm.  The Queen's Dragons and Captain Drake aren't far behind, though, and soon the thieves are hiding from the guards, held captive by the scheming innkeeper, and set free by his abused and silent wife, who also shares more information with Dessa about the sorcerer who kidnapped Dessa's brother and scarred the innkeeper's wife in an attempt to cut out her tongue before she could tell anyone about the spell book and odd word she discovered in his room.

Paranormalcy, by Kiersten White

One in a spate of paranormal-themed YA books, this one held my interest more than many of the others I've read lately.  Evie is a teen who has been fostered with the International Paranormal Containment Agency since she was 8 years old, working for them during that time as the only person able to see through any glamour from any paranormal.  It's not breaking new ground in terms of content or teen angst, but it does have some nice "surprises". 

Only the Good Spy Young, by Ally Carter, Bk 4 in the Gallagher Girls series

In the previous three books in the series Cammie aka Chameleon Morgan has found out how serious being a Gallagher Girl is.  In the beginning it was fun knowing that she was a spy-in-training, sneaking out to meet a townie boy in Book 1 and using their special skills at detection, evasion, invention and deception to learn more about the mysterious boys from Blackthorne Academy in Book 2. 

White Cat by Holly Black, Curse Workers, Bk. 1

It was extremely hard not to read ahead in this book because I wanted to know what was going to happen next.  Little clues and pieces of info get scattered out like breadcrumbs, drawing you on, making you want to keep reading.  I figured out some of the twists before they came, but not all, and not too much before they were revealed.

Nathaniel Fludd, Beastologist by R.L. LaFevers

Book 1: Flight of the Phoenix

When his parents disappeared while off adventuring, Nathaniel is sent to live with Phil A. Fludd, and aunt he did not know. With her he discovers that his parents, aunt and most of his ancestors are beastologists, "someone who studies beasts. Not any old beast, mind you. Only unusual beasts...like dodos. Or basilisks, or griffins, or manticores and the like." But Nate isn't sure he's cut out to be an explorer or adventurer, especially when his first beastology trip with his aunt results in her being held prisoner by Bedouins and Nate on his own to make sure a phoenix egg hatches, figure out how to rescue his aunt and keep the families Book of Beasts safe from a mysterious man who wants to steal it.

Sequel: The Basilisk's Lair

SLJ grades 3-5