Rysa Walker’s Chronos Files have quickly become one of the best-known young adult (YA) sagas around, and it’s easy to see why. With crisp dialogue, excellent characterization and an intriguing premise, the story of Kate Pierce-Keller and the people who surround her is engrossing and thought-provoking. I reviewed the first book of the Chronos Files, TIMEBOUND, here. (If you haven’t read that review, go do so now, or what I’m about to say will make little sense.)

Chronologically, TIME’S ECHO is a novella that explains just who Kiernan is — the mysterious, dark-haired stranger who seemingly popped up every time Kate was in trouble during TIMEBOUND has an interesting backstory of his own. Kiernan, you see, is from the early 20th Century, and like Kate, is able to use a Chronos device in order to travel through time. Not being limited to the world he grew up in, Kiernan has been to the 21st Century, 22nd Century, even the 23rd Century…but his heart belongs to Kate.

However, the Kate he knew — a nineteen-year-old, rather feisty Kate who’d entered into something akin to a common-law marriage with him — is not the Kate we got to know in TIMEBOUND. You see, the same bad actors who were causing trouble in TIMEBOUND have already caused trouble for Kiernan and Kate…and the history and life experiences that created his version of Kate Pierce-Keller are so altered that the Kate who now stands is not only younger than the one he knew, but no longer recognizes him.

See, this is where I have to describe some of the doings of the bad actors (stuff I decided to gloss over in my previous review). They are known as Cyrists, and they’ve created a new religion that dates back to roughly the 15th Century. The founder of this religion, Saul, is actually Kate’s grandfather — and like Katherine, Kate’s grandmother, is from the 23rd Century. Saul and Katherine had a huge blow-up, because Katherine believed that timelines should be preserved — what she’d been taught all her life — while Saul believed that time-traveling historians (like himself and Katherine) should be able to alter time any way they wanted. (You can see where this would be a huge problem, yes?)

Anyway, Katherine didn’t know it, but she was already pregnant by Saul when she became marooned in the 20th Century. She married, had twins — one being Kate’s mother, the other being Kate’s long-missing and presumed dead aunt, Prudence — and settled into a new life as a historian and teacher. She no longer can time-travel due to the actions of Saul, and Saul cannot time-travel either — but their descendants can, at least some of them. (Prudence can, for example, while Kate’s mother cannot. And those who can’t time-travel mostly disbelieve those who can. Keep that in mind.)

So in TIME’S ECHO, we actually get to see a little bit of nineteen-year-old Kate. She’s deeply in love with Kiernan. They have built a life that’s unconventional in that they both time-travel at will, but it works for them. And so long as they both maintain their Chronos devices (an amulet that glows a different color for each time-traveler, but looks like a dull metal to non-time-travelers), they will continue to be in the same timeline and be able to stay together.

Then disaster strikes. The Cyrists decide that nineteen-year-old Kate is too meddlesome, so they figure out a way to remove her as a threat to them by some adroit shifting of the timeline. This also takes nineteen-year-old Kate away from Kiernan, who pretends he doesn’t know who she is when asked by Prudence, Kate’s aunt. But in reality, he is steamed, and vows to find out just what happened to Kate.

That’s why Kiernan shows up to protect Kate so often in TIMEBOUND. She’s not the Kate he knew, no. She’s younger, more innocent, hasn’t had the same experiences, and is in love with another young man, Trey. But she’s still Kate, and he still loves her.

TIME’S EDGE goes back to the Kate we know. She’s working with Kiernan and her aunt, Katherine, to retrieve as many Chronos devices as she can in order to keep them out of the hands of Saul and his Cyrists. Working with a man who’s in love with you when you’re in love with someone else is not easy…but Kiernan has vowed to help bring down the Cyrists, and Kate needs his help, so they’re doing the best they can.

As for Trey, he’s learning to love Kate all over again, but their relationship isn’t quite the same as before. (This is because the original relationship Kate built with Trey was wiped out by a time-shift. Note the parallels here between what happened to Kiernan’s Kate, and Kate’s Trey.) But they’re working at it, and Trey still does feel something for Kate…Kate has hopes that eventually, their love relationship will be as strong as it was before.

There are more time-traveling adventures, this time to the 1930s, the 1960s, and of course a bit back to the early 1900s (Kiernan’s original time). These are all well-written and engrossing, and show the problems of several other stranded time-travelers, including an interracial married couple who unfortunately got stranded in the Southern U.S. of the 1930s. (It was still illegal for white women and black men to be together, much less sleep with one another, at that time.)

Throughout TIME’S EDGE, there is a palpable sense of danger. Kate has already been targeted by the Cyrists before, and they’ve missed twice. How long can she keep going before they kill her and wipe away all memory of her from the timeline? And what will happen to the other time-traveling historians in the wake of the Cyrists’ new religion?

All of these questions will be answered, but in turn will raise even more questions — which is the main reason why I can’t wait to read TIME’S DIVIDE (book three in the Chronos Files)…but I digress.

These are excellent stories, full of action, great characterization, witty dialogue, and fine romance. Despite the apocalyptic nature of the Cyrists and all of their menacing power, there’s somehow a sense that Kate, Trey, Kiernan, and Katherine can prevail. This hopefulness suffuses the entirety of the Chronos Files series, and is the main reason I find these stories to be so addictive.

Bottom line: Read Rysa Walker’s Chronos Files, or you’re missing something extraordinary.

Grades: TIME’S ECHO — A

TIME’S EDGE — A-plus

–reviewed by Barb