On, Off

A Novel

On, Off

A searing scientific murder mystery packed with heartpounding twists.
  • Gallery Books | 
  • 432 pages | 
  • ISBN 9781451641738 | 
  • March 2011

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About the Author

Colleen McCullough
Photograph © Louise Donald

Colleen McCullough

Colleen McCullough, a native of Australia, established the department of neurophysiology at the Royal North Shore Hospital in Sydney before working as a researcher at Yale Medical School for ten years. She is the bestselling author of numerous novels, including The Thorn Birds, and lives with her husband on Norfolk Island in the South Pacific.

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