The Cradle Mission (Nighthawk Island) by Rita Herron, Harlequin Intrigue, Book May 710. Paperback Published by Harlequin Romance, 2003. Like New Condition. Book No. 3 of the Cradle Mission Series.

Nighthawk Island is one of three remote islands that comprise the Coastal Island Research Park (CIRP) off the coast of Savannah, Georgia and houses cutting edge, experimental medical research projects and secret government projects which test the boundaries of ethics and the imagination.
When vulnerable beauty Alanna Hayes appeared on his doorstep with a baby in tow, Cain Caldwell didn't know what to think. On the run after uncovering evidence of secret experiments at the Coastal Island Research Park, she claimed his brother had promised to help her, but he was dead. The closer Cain got to Alanna, the more difficult it was to remember she might be involved in murder. Except this hardened lawman couldn't deny the passion rising between them, and neither could Alanna. Would Cain join the mission to save baby Simon from the mysterious forces of Nighthawk Island before it was too late?