Earth is on the brink of catastrophe. The vital foodstuffs supplied by its Martian colony are being poisoned. Working in secret, the ruling Council of Science sends David Starr, its youngest member, to the Martian farmlands to discover the truth behind the murders...

Earth Is Room Enough is a collection of fifteen short science fiction and fantasy stories and two pieces of comic verse published by Isaac Asimov in 1957. In his autobiography In Joy Still Felt, Asimov wrote, "I was still thinking of the remarks of reviewers such as George O. Smith . . . concerning my penchant for wandering over the Galaxy. I therefore picked stories that took place on Earth and called the book Earth Is Room Enough." The collection includes one story from the Robot Series and four stories that feature or mention the fictional computer Multivac.

In the twenty-third century pioneers have escaped the crowded earth for life in self-sustaining orbital colonies. One of the colonies, Rotor, has broken away from the solar system to create its own renegade utopia around an unknown red star two light-years from Earth: a star named Nemesis. Now a fifteen-year-old Rotorian girl has learned of the dire threat that nemesis poses to Earth's people--but she is prevented from warning them. Soon she will realize that Nemesis endangers Rotor as well. And so it will be up to her alone to save both Earth and Rotor as--drawn inexorably by Nemesis, the death star--they hurtle toward certain disaster.

RIDDING THE WORLD OF EVIL, ONE ALIEN AT A TIME: THAT'S MIA SNOW'S MISSION.

Snow is in the forecast.

In a time and place not too far away, Mia Snow is an alien huntress for the New Chicago Police Department. Heading up her expert team of Alien Investigation and Removal agents, Mia's unmatched at battling the elusive enemy among us, and she's the perfect girl for the job. She's seen her brother die at the hands of aliens. She's earned each of her scars. And she'll die before she cries. Now, a series of killings have Mia and her partner Dallas tracking alien suspects -- but a sudden blast of violence leaves Dallas fighting for his life.

They are ice and fire.

The chance to save Dallas appears in the form of a tall, erotic stranger. An alien. A murder suspect. Kyrin en Arr, of the deadly Arcadian species, holds the power to heal the injured agent but not without a price. For Mia Snow, that price is surrendering to Kyrin's forbidden seduction...and embracing their electric attraction. She's walking a knife's edge, risking her badge and even her life. The closer she gets to Kyrin, the more Mia learns about her own heart, her human needs -- and the shocking secret that will shatter everything she's ever believed.

Nightfall by Isaac Asimov, Robert Silverberg

Imagine living on a planet with six suns that never experiences Darkness. Imagine never having seen the Stars. Then, one by one your suns start to set, gradually leading you into Darkness for the first time ever. Image the terror of such a Nightfall.

Scientists on the planet Kalgash discover that an eclipse - an event that occurs only every 2049 years - is imminent, and that a society unfamiliar with Darkness will be plunged into madness and chaos. They realize that their civilization will end, for the people of Kalgash have a proven fear of Darkness, but they are unable to predict the insanity and destruction that will accompany the awesome splendor of Nightfall.

Based on the classic short story by Asimov, "Nightfall" is unabridged Bookcassette Audio at its best - a spellbinding tale of an alien civilization not unlike our own.