Unknown Threat - (Defend and Protect) by Lynn H Blackburn (Paperback)

This thrilling romantic suspense novel, "Unknown Threat," follows FBI Special Agent Faith Malone and US Secret Service Agent Luke Powell as they race against time to uncover the truth behind a series of mysterious attacks that have left four agents dead.

With a killer on the loose, Faith and Luke must work together to bring the perpetrator to justice before anyone else gets hurt.

As they dig deeper into the case, they discover that nothing is as it seems, and their investigation takes them down a dangerous path of intrigue and deception.

Will they be able to uncover the truth before it's too late? Find out in this heart-pumping page-turner that will keep you on the edge of your seat until the very end.