Black Tide — Brett Diffley

In books one and two of the Davenport Series, Reed Davenport and True John were instrumental in discovering, and shutting down, a worldwide human trafficking ring. This is part three of the Davenport Series, and in this riveting book they stumble across a mysterious black torpedo while cleaning an oil spill off the Washington State coast.

Carried by the tide in an island of floating bull kelp, this weapon then explodes mysteriously, killing two Coast Guardsmen sent to keep an eye on it. It's later discovered the two were murdered -- shot to death -- and this was no accident.

As the mystery deepens, and with each revelation, Reed and TJ find themselves in a race against time, when they learn the Nazi-built torpedo was the first bio weapon of its kind, and someone intends to make sure the original mission gets carried out. Now it's up to Reed, True John, and the Coast Guard to not only fight the responsible party, but also stop a potential outbreak -- an outbreak of the original black plague strain that killed more than three quarters of the European population back in the mid-thirteen-hundreds.