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Cahill Files
Optrin
Author Clifford Riley
Publication date May 8, 2012

The Cahill Files is a series of short stories and e-books. There are two published books, Operation Trinity and Spymasters, available in hardcover. Each published book contains three shorts. The shorts in Spymasters are also published as separate e-books. Another e-book, Silent Night, was published separately as a Christmas special. All of these are written by Clifford Riley.

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