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Fifteen-year-old Roberta Ritter's mother was murdered years ago by an unknown killer. Roberta now works in a run-down arcade in a mall and the only action comes from a violent game called Crusader. When a burst of hate crimes explodes at the mall, Roberta must separate the real from virtual to find out the cause of these crimes--and the truth behind her mother's death.

Crusader 2007, Hmh Books for Young Readers

ISBN-13: 9780152063146

Trade paperback

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Crusader 2001, Scholastic Paperbacks, New York, NY

ISBN-13: 9780439221603

Mass-market paperback

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Crusader 2001, Turtleback Books, New York, NY

ISBN-13: 9780613360579

Turtleback School & Library edition

Hardcover

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Crusader 2001, Turtleback Books

ISBN-13: 9780606211321

Turtleback School & Library edition

Hardcover

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Crusader 1999, Hmh Books for Young Readers, San Diego, CA

ISBN-13: 9780152019440

Hardcover

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