Two researchers working to save Earth from its climate crisis unexpectedly uncover a 100,000-year-old secret under Antarctica's ice. Will our ancient ancestor's secret be Earth’s salvation or the greatest threat to our survival? The action is fast-paced and nonstop in this international thriller to save the planet and humankind.

In Lake Maracaibo, in the northwestern part of Venezuela, a long-hidden extraterrestrial artifact underneath the ocean floor triggers a disaster. The United States military launches an expedition, sending a cutting-edge team of international researchers to the source of a magnetic instability that's destroying any electronics in the region.

In the depths of an ancient Egyptian tomb, archaeologists make a baffling discovery: the mummified body of a man clad in a space suit. Halfway around the globe, exobiologist Dr. Katherine Shepard and intelligence officer Colonel Devon Peters are summoned to the site of a downed UFO. To their amazement, they find one of the occupants alive. Even more shocking, he appears to be human. As Shepard and Peters delve deeper into the enigma, they expose a chilling truth: aliens have inhabited Earth far longer than anyone could have imagined, and they are not alone.

Caesar, an undercover operative, enters Carmichael with the briefest of orders from his boss and a countdown on his phone. What will happen when the clock strikes zero? Deputy Amelia Miller is dispatched from a nearby city, and a series of events keeps her around much longer than she'd expected. In the middle of the night, something shifts, and the whole town disappears off the face of the Earth. Who caused the shift, and what lies beyond the veil of their settlement?

Get ready to experience two more origin stories in the Backyard Starship universe.

When Malia Kwan exhibits unusual abilities, government agents show up at her home to apprehend her and her twin brother, Jaden - and all hell breaks loose. After their parents are killed, Jaden and Malia flee into the night, becoming fugitives. Before long, they discover their true identities are tied to the lost city of Atlantis - and to the origins of humanity itself. And now a threat emerges that could wipe out the entire human race - unless Jaden and Malia can stop it!

In 2018, Canadian archaeologist Ron Jackson makes a mind-boggling discovery in Antarctica - right before disappearing without a trace, leaving behind only his controversial theory that humans have lived on Earth far, far longer than we think they have. Decades later, in 2042, when Jackson's wife dies under mysterious circumstances, an unlikely pair of investigators, Agatha Devenworth and Pano Hofer, begin investigating whether her death might be connected to Jackson's disappearance.

Carpenter Lowell is a disgraced Marine assigned to a remote US research station on Saturn's moon Enceladus, where scientists have made an extraordinary discovery in the ocean below. A special forces team, led by Lowell’s murderous former commanding officer, shows up to investigate. Almost immediately, everything begins to unravel. Something beneath the surface has been activated.

After barely escaping from his last project alive, Professor Elliot Brand wanted to spend a few calm months lecturing in London. But when a billionaire presents him with the perfect mystery, he can't resist and soon finds himself in a dangerous world of Nepali spies, ancient ruins, and a truth about humanity that might change the world forever... or end it.

The world holds its breath as the colossal asteroid 2011 AG5 hurtles towards the Earth. As humanity is faced with extinction, archaeologist Sarah Morgan is in a race against time to uncover a secret that has been buried for millennia: that an advanced ancestor once populated the Earth. As Sarah travels across the continents in search of the truth, she discovers there are those that will kill to protect this most ancient of secrets....

A secret branch of the U.S. government has found pyramids on Callisto, a Jupiter moon. They are etched with ancient hieroglyphs that no one can understand - no one but archaeologist Kaden Jaxx. What's more, the pyramids are giving off energy. Lots of energy. Enough to power half of the United States. But Jaxx discovers his Black Ops bosses are hiding an Earth-shattering truth - an ancient civilization may still be on that moon. And a secret launch to that moon is imminent.

Not Alone: First Encounter is a prequel to the globally acclaimed Not Alone series, set several years before two worlds collide under the weight of the grandest conspiracy of all time. For the first time ever, First Encounter lifts the curtain on a deadly series of events surrounding the initial meeting between the ruthless Richard Walker - untouchable head of the controversial Interspace Defense Agency - and a young truth-seeker from Birchwood, Colorado....

Former FBI profiler Adrian West is in Rome for a history conference when she learns that her friend and colleague, Dr. Sebastian Rossi, has been abducted.

At the end of the world, a groundbreaking scientific experiment will change everything. Dr. Laura Reynolds had it all. A job she loved. The respect of her peers. Student debt she was slowly chipping away at. And one day, it all went away. She saw the wrong thing—a colleague's mistake. And to escape, he framed her. Laura's only option is to join a secretive research project in Antarctica, where she hopes to keep practicing medicine and one day get her life back. But soon after arriving, she realizes that things aren't what they seem in this advanced facility.

Charlie Travers figures his life can’t get much worse. He lives over a pizza restaurant, he’s lost his girlfriend, and has no prospects for a career. Then, he’s abducted by an alien robot and taken across the galaxy. When he wakes up, he finds himself stranded thousands of light-years away, and about to be killed by space pirates.

When Sasha receives a call from her old university friend Gabby inviting her to spend Christmas at Gabby’s remote Scottish lake house, Sasha knows she shouldn’t go. Twelve years ago, on Christmas Eve, when Sasha and her five closest friends were celebrating the festive season, something truly horrific happened that would change the course of their friendship forever. Something that meant Sasha hasn’t spoken to any of them since that night.

Two little girls stand with their heads bowed in my living room. I’m told they’re my granddaughters. Daisy is nine, and Alice seven. Daisy is the spitting image of her mother. This is the first time I’ve met them since my daughter and I fell out after she married that waste of space, Vince. They’ve come to live with me because their mother — my daughter — was murdered. In her own home while they slept close by. I think Vince killed her. But the police can’t prove it. I’ve always known he was no good. He treated my daughter like dirt. I said he’d cheat on her — but she wouldn’t listen.

Lowen Ashleigh is a struggling writer on the brink of financial ruin when she accepts the job offer of a lifetime. Jeremy Crawford, husband of best-selling author Verity Crawford, has hired Lowen to complete the remaining books in a successful series his injured wife is unable to finish. Lowen arrives at the Crawford home, ready to sort through years of Verity's notes and outlines, hoping to find enough material to get her started. What Lowen doesn't expect to uncover in the chaotic office is an unfinished autobiography Verity never intended for anyone to read.

After the killing of a prominent mob lawyer, NYPD homicide detectives Jacob Jackson and Caitlin Grimes start receive chilling, written “rules” for how to commit the perfect murder. "Rule number one for the perfect murder: Evidence is your enemy. Leave none behind." Jackson (Reid Scott) and Grimes (Cobie Smulders) race to find the killer, setting them on a collision course with the city’s crime underbelly, and a perpetrator who seems happy to toy with them. “Rule number two. No crimes of passion. The perfect murder is always business, never pleasure.”

It’s 1984, and life has changed beyond recognition. Airstrip One, formerly known as Great Britain, is a place where Big Brother is always watching, and nobody can hide. Except, perhaps, for Winston Smith. Whilst working at the Ministry of Truth, rewriting history, he secretly dreams of freedom. And in a world where love and sex are forbidden, where it’s hard to distinguish between friend and foe, he meets Julia and O’Brien and vows to rebel.

It’s been two years since Anna Cartwright’s life fell apart. During her first school trip as a young teacher, a student went missing and was never found. Not only was her career ruined, she was also accused of having an affair with fellow teacher and prime suspect Graham. Facing questions from journalists, police and family, Anna said she didn’t know what happened. She was lying. Now, Anna has returned to Australia. Her only hope is Land’s End Area School, an isolated concrete wasteland perched on the cliffs.

Kidnappers grabbed Jenna in broad daylight, right in front of her children and their horrified classmates. Her family was issued an insane ransom demand: $25 million in cash and jewels, payable by the end of the school day, otherwise they’ll never see her again. As Jenna’s mother scrambles to gather the money, detectives Mo Butler and George Ortega follow the trail of the kidnappers, which will lead them through a sordid landscape of jealous lovers, broken dreamers, and twisted schemers. But every second counts, and there’s one thing Jenna Wade doesn’t have: very much time.

My fiancé brought me tea and scrambled eggs in bed that morning, and we snuggled together, talking about buying our rings, and about our perfect wedding next year. Then we headed into town. He held my hand and gazed at the ring I liked best, a smile spreading slowly over his face. Then a glass of bubbly to celebrate. I felt flushed, excited and ready for the rest of my life with the man I loved. We race to get on the train home. It screams to a halt and I run towards its open doors. Made it. I think he’s right behind me — but when I turn around, he’s gone.

England, 1914. The world is at war. Captain Hastings, injured and shaken, is invited to Styles Court to recover. It’s a grand old country house - the family home of his old friend - and a perfect haven. Or so it seems. But in the blistering summer heat, trouble is afoot. Simmering tensions are tearing the family apart, and it all comes to a head in the most horrifying way.

Jazz Bashara is a criminal. Well, sort of. Life on Artemis, the first and only city on the moon, is tough if you're not a rich tourist or an eccentric billionaire. So smuggling in the occasional harmless bit of contraband barely counts, right? Not when you've got debts to pay and your job as a porter barely covers the rent. Everything changes when Jazz sees the chance to commit the perfect crime, with a reward too lucrative to turn down.