Crossover is the first novel in a series which follows the adventures of Cassandra Kresnov, an artificial person, or android, created by the League, one side of an interstellar war against the more powerful, conservative Federation. Cassandra is an experimental design—more intelligent, more creative, and far more dangerous than any that have preceded her. But with her intellect come questions, and a moral awakening. She deserts the League and heads incognito into the space of her former enemy, the Federation, in search of a new life. Her chosen world is Callay, and its enormous, decadent capital metropolis of Tanusha, where the concerns of the war are literally and figuratively so many light years away. But the war between the League and the Federation was ideological as much as political, with much of that ideological dispute regarding the very existence of artificial sentience and the rules that govern its creation. Cassandra discovers that even in Tanusha, the powerful entities of this bloody conflict have wound their tentacles. Many in the League and the Federation have cause to want her dead, and Cassandra’s history, inevitably, catches up with her. Cassandra finds herself at the mercy of a society whose values preclude her own right even to exist. But her presence in Tanusha reveals other fault lines, and when Federal agents attempt to assassinate the Callayan president, she finds herself thrust into the service of her former enemies, using her lethal skills to attempt to protect her former enemies from forces beyond their ability to control. As she struggles for her place and survival in a new world, Cassandra must forge new friendships with old enemies, while attempting to confront the most disturbing and deadly realities of her own existence.

From Publishers Weekly

Set in the far future, Australian author Shepherd's energetic debut introduces Cassandra Kresnov, an experimental killer android-with-a-heart who has defected from her League Dark Star special ops assignment. Graced with a yen for human art almost as insatiable as her libido, Kresnov first tries to melt anonymously into Tanusha, the sybaritic capital of Callay, a planet of the League's galactic archenemy, the Federation. But Cassandra can't leave her martial past behind when she's caught up in a heroic struggle to protect the Callayan president from assassination by Federal forces. Shepherd's intriguing heroine and strong female characters bode well for this projected series. Lacing Cassandra's search for identity and acceptance with plenty of hand-to-hand combat and racy sexual exploits, Shepherd also convincingly presents vividly realized ethical dilemmas: what happens to soldiers when the war is over? can a culture that opposes the artificial manufacture of life accept its creations? Shephard grapples with some genuinely thought-provoking questions on the nature of humanity. (Aug.)
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Review

"...rich world...somewhere androids are still dreaming of electric sheep, and authors wonder what it means to be human." -- Contra-Costa Times, San Francisco

"An awesomely zesty adventure set amongst a nicely realized multiethnic future. A blast to read." -- Tobias S. Buckell, author of Crystal Rain

"First class … a great heroine." -- Peter McNamara