From USA Today best-seller Robert Armstrong comes the fast-paced sci-fi series Echo Effect. Get the first two titles from the series in this audiobook: Echo Effect and Symphony of Descension.

Space travel just isn't what it used to be. With the invention of quantum teleportation, space heroes aren't needed anymore. When one particularly unlucky ex-adventurer masquerades as famous pilot and hate figure Jacques McKeown, he's sucked into an ever-deepening corporate and political intrigue. Between space pirates, adorable deadly creatures, and a missing fortune in royalties, saving the universe was never this difficult!

With the help of a powerful computer system, Alison Shaw and her team are preparing to translate the first two-way conversation with the planet's second smartest species. But the team discovers much more from their dolphins than they ever expected when a secret object is revealed on the ocean floor. One that was never supposed to be found.

After decades hunting wanted offworlders throughout the solar system, Corporate Bounty Hunter Malcolm Graves doesn't bother asking questions. So long as the pay is right, he's the man for the job. And he always works alone. But when a high-profile bombing on Earth has Pervenio Corp clamoring for answers, they force him to team up with a strange, cyber-augmented partner. A young man more interested in statistics than instinct. Their assignment: Track down a suspected group of extremists from Titan who will go to any length to free their moon from the grip of Earth's corporations.

In the year 2043, with the nation destroyed by war, 17-year-old Kress and her conspiracy of friends embark on a dangerous cross-country mission to locate and recruit other Emergents, the name given to teenagers who have begun to exhibit strange evolutionary abilities. Not all Emergents are ready to accept who and what they are, however, and some have even started using their abilities for selfish or evil ends. Now Kress has to figure out who is friend and who is foe as she risks everything to expose the government’s lies and take down the tyrannical President Krug once and for all.

Alex Hunter - in the mission that turned him from a normal man into the weapon known as the Arcadian - and the elite team of soldiers known as the Hotzone All-Forces Warfare Commandos must enter a hostile country to rescue a defected Chechen researcher from the centre of a country at war. But the HAWCs are not the only ones looking for the rogue scientist and the mysterious package he carries with him. A brutal and relentless killer and his death squad are on the trail, too - and they bring a savagery with them that Hunter and his team have never witnessed before in modern warfare.

In this sixth and concluding book of the Tunnels series, the Styx and their cohorts of deadly Armagi have swept across England, leaving death and devastation in their wake. It seems nothing can stop them now. Only a miracle can save the day and, in the inner world at the centre of the earth, Will and Elliott might just have stumbled upon one as they uncover ancient secrets that are fundamental to al human and Styx life.

If you could go back in time...and witness any event...where would you go? When Dr. Tom Greenbaum faces that question after successfully discovering the secret to time travel, he knows the time, place, and event he will witness: the death and failed resurrection of Jesus Christ. Dr. David Goodman, Tom's colleague and closest friend follows Tom into the past, attempting to avert a time-space catastrophe, but forces beyond their control toss them into a dangerous end game.

Russia, 1959. Nine members of a Soviet mountaineering team on an ambitious expedition into the Ural Mountains are found dead, victims of massive and bizarre injuries. The Dyatlov Pass incident, as this grisly event came to be known, remains unexplained to this day.

When a huge alien spacecraft crashes on the island of Cuba, the world scrambles to investigate. Secretive organizations have waited for generations for this opportunity, and they do not hesitate to send in recovery teams. Cooperation between nations breaks down as every government wants the newly discovered technology for themselves. Naturally, the Cubans have beaten everyone else, and the island is beginning to change. Aircraft flying reconnaissance are swatted from the skies.

In the mid-23rd century, Darwin, Australia, stands as the last human city on Earth. The world has succumbed to an alien plague, with most of the population transformed into mindless, savage creatures. The planet’s refugees flock to Darwin, where a space elevator—created by the architects of this apocalypse, the Builders—emits a plague-suppressing aura.

Commander David Bryce is scheduled to lead a routine re-supply run for the Orbital Development Group (ORB) to the fledgling colony on Mars. Without warning, he’s taken away by government agents and told the mission parameters have changed. They’ve discovered something. And it’s drifting closer to Earth. Atlas Donovan tirelessly hunts for an artifact, and tracks the piece to Lake Como, Italy. After the recent news from ORB, Atlas is more drawn to the trail than ever.

It's one of history's most enduring and controversial legends: the lost city of Atlantis. Archaeologist Nina Wilde is certain she's solved the riddle of its whereabouts - and with the help of reclusive billionaire Kristian Frost, his beautiful daughter, Kari, and ex-SAS bodyguard Eddie Chase, she's about to make the most important discovery in centuries. But not everyone wants them to succeed....

In the summer of 1947, an unidentified object crashed in Roswell, New Mexico. There were no survivors. Now it's happened again. But this time, two creatures have emerged from the wreckage alive.

A 4,000-year-old mystery lurks in the hills of Georgia. While investigating a strange series of ancient symbols, an archaeologist vanishes, and a professor he entrusted with the secret is murdered. Former government agent Sean Wyatt learns of his friend's disappearance and the murder. Now he must unravel the clues to the ancient mystery that holds incredible power.

Alex Hunter - in the mission that turned him from a normal man into the weapon known as the Arcadian - and the elite team of soldiers known as the Hotzone All-Forces Warfare Commandos must enter a hostile country to rescue a defected Chechen researcher from the centre of a country at war. But the HAWCs are not the only ones looking for the rogue scientist and the mysterious package he carries with him. A brutal and relentless killer and his death squad are on the trail, too - and they bring a savagery with them that Hunter and his team have never witnessed before in modern warfare.

Russia, 1959. Nine members of a Soviet mountaineering team on an ambitious expedition into the Ural Mountains are found dead, victims of massive and bizarre injuries. The Dyatlov Pass incident, as this grisly event came to be known, remains unexplained to this day.

They came from the brightest star in the southern constellation of Carina. First they studied us. Now they're among us, threatening human existence as they search for the Starcore, the greatest device of the lost Polarions. Logan is captured in the Nevada desert but escapes in Greenland. There he finds an extraterrestrial stealth ship, giving him the means to take the battle to the enemy.

The world had become used to the metahumans - people sometimes perfectly ordinary, but sometimes quite extraordinary in appearance - who mostly worked with their governments as high-powered peace officers, fighting crime, and sometimes fighting rogue metahumans who had become super-criminals. Then that comfortable world ended in just one terrifying day.

In the summer of 1947, an unidentified object crashed in Roswell, New Mexico. There were no survivors. Now it's happened again. But this time, two creatures have emerged from the wreckage alive.

After decades hunting wanted offworlders throughout the solar system, Corporate Bounty Hunter Malcolm Graves doesn't bother asking questions. So long as the pay is right, he's the man for the job. And he always works alone. But when a high-profile bombing on Earth has Pervenio Corp clamoring for answers, they force him to team up with a strange, cyber-augmented partner. A young man more interested in statistics than instinct. Their assignment: Track down a suspected group of extremists from Titan who will go to any length to free their moon from the grip of Earth's corporations.

Myke Cole is an expert at ratcheting up suspense and delivering pulse-pounding adventure that leaves audiences breathless. In Shadow Ops: Control Point, the world has seemingly gone mad. People are waking up with magical powers, such as the ability to raise the dead or call forth storms. The only thing staving off a plunge into chaos is the Supernatural Operations Corps, headed by Oscar Britton. But when Oscar exhibits a power of his own, the hunter becomes the hunted.

A devastated Earth's last hope is found in Pearls: small, mysterious orbs that fall from space and are capable of supplying enough energy to power entire cities. Battling to control the Pearls are the Skyship dwellers -political dissidents who live in massive ships in the Earth's stratosphere - and the corrupt Surface government.

Meet Cole: hapless space rogue, part-time smuggler, on a path to being full-time dead. His sidekick just stole his girlfriend. The galaxy's most hideous and feared bounty hunter wants to lay eggs in his brain. And the luxury space yacht Cole just hijacked turns out of be filled with interstellar do-gooders, one especially loathsome stowaway, and a cargo of freeze-dried orphans.

Logan Willis’s life is falling apart: he lost his job and found out that his wife is cheating on him all in the same day. Thinking that his world has ended, Logan checks into a hotel and turns on the TV to see that he's not far wrong - radio telescopes have detected mysterious signals coming from inside our solar system, and the source is moving toward us at over 500 miles per second. The media concludes that these signals must be of an alien origin. Still reeling from the news, Logan gets a phone call from his brother-in-law.

A mysterious woven metal artifact is found at a paleontological dig in Africa. Mystified experts, confounded by the impossible timeline they get from traditional dating methods, call upon a stubborn young man with a unique talent. Matthew Turner's gift is also his curse: When he touches any object, his awareness is flooded with the thoughts and feelings of those who touched it before him. It is a talent that many covet, some fear, and almost no one understands.

Over ten years ago, Air Force major Nick Baron was part of a failed special ops mission that left a B-2 stealth bomber at the bottom of the Persian Gulf. Now, leading his men - the Triple Seven Chase team - Baron must find the bomber and dispose of it for good before any unfriendly nation can steal the onboard technology for its own purposes. But as the team embarks on its mission, there are greater dangers waiting.

Cursed by a blind witch in a remote corner of Waristan, Special Ops Captain Jason Wolfe finds himself transforming into a creature of local legend, a lupine referred to in fearful whispers as Blue Wolf. Faster, stronger, and more lethal, he’s the perfect soldier - but not for the US military. To break the curse, Jason must join a war between ancient tribal foes: blue werewolves and the formidable White Dragon. In a battle spanning from the peaks of Central Asia to the valleys of Manhattan, Jason will push himself to the breaking point.

John is a father, but that wasn't his day job before the Zombie Apocalypse. Seven months after the events in 900 Miles, we pick up with John and Kyle who are bunkered down with their newfound community back at Avalon. Unexpectedly thrust outside the protection of Avalon's walls, they're forced back into the world of the dead on a scavenging run that should be routine. However, they quickly learn that there are forces at play making this journey anything but...

On June 30, 1908, an object fell from the sky, releasing more energy than a thousand Hiroshima bombs. A Siberian forest was flattened, but the strike left no significant crater. The anomaly came to be known as the Tunguska Event, and scientists have never agreed whether it was the largest meteor strike in recorded history - or something else. Alien artifacts have been uncovered since the 1908 event, and a new star drive is discovered.