Last Sentinel: Ether War Book 5
The Morrigan has suffered some setbacks. Their marine commander is presumed dead. Two of their operatives are back home on a secret mission, unable to communicate back. They lost their prototype gunboat to hijackers and now, they face an old threat that may well prove to be more than they can handle.

But lives are on the line. A conspiracy must be unravelled. Forces both foreign and domestic work against them, pushing toward some victory state they have yet to uncover. As various battles come to a head, the crew of the Morrigan may well have to put everything on the line in order to preserve all they hold dear.