New York: Congdon & Lattes, (1981.) dj. Hardcover first edition - Bayer's Edgar award novel of a serial killer in New York City who uses a peregrine falcon as his weapon. Publisher's Weekly stated 'Bayer's original, carefully built thriller almost defies readers to stop at any point, no matter how horrified they might be...' 243 pp. ISBN: 0-312-926448.