"Human-alien encounters Fiction." . . "Human-alien encounters." . . "Science fiction." . . "Science fiction" . . . . . . "Fiction" . . "Fiction"@en . "The lives of all humankind, especially a group of friends, are transformed forever by the arrival of a mysterious alien race, the Kethani, that arrives on Earth bearing the extraordinary gift of immortality."@en . . . "Electronic books" . . . . "The lives of all humankind, especially a group of friends, are transformed forever by the arrival of a mysterious alien race, the Kťhani, that arrives on Earth bearing the extraordinary gift of immortality and the implications of that gift on the future of the human race." . . . . "Kéthani" . "Kéthani"@en . "It takes an alien race to show us what humanity truly is. This is the irony faced by a group of friends whose lives are changed forever when the mysterious alien race known as the Kethani come to Earth bearing an amazing gift: immortality." . . . . "The alien Kéthani offer humanity the gift--or curse--of immortality." . . . . . "The alien Kéthani offer humanity the gift--or curse--of immortality."@en . . . "Science fiction" . "Science fiction"@en . "Kethani" . "Kethani"@en . "Extraterrestrial beings." . .