The Boneyards of Nebula

The Sons of Neptune Saga continues: 

A distress call is intercepted from a dark anomaly in space, a starship graveyard known as the Boneyards of Nebula. The Praihawk sails to answer the call; they will be the first humans to cross into the zone in over a century. Meanwhile, creatures overrun Starbase 21, and Lusus tightens his grip on both Earth and Neptune. These events are intricately tied together, and will bring the Earthlings back into a war they thought was long over.

A new mystery, a new weapon, and a horde of new enemies. Everyone on Earth and in space - men, spiders and creatures - must pull together one last time. 

The exciting conclusion to the science fiction series: Sons of Neptune.