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.

Archaeologist Nina Wilde believes she has found the location of the lost city of Atlantis, and now she wants the opportunity to prove her theory. Someone else though wants her dead! With the help of ex-SAS bodyguard Eddie Chase and beautiful heiress Kari Frost, Nina faces a breakneck race against time around the world, pursued at every step by agents of the mysterious and murderous Brotherhood of Selasphoros.

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.