In Book 4 of the Penumbra series, Reggie Hawkins is so bored that he's taking apart a toaster in his kitchen, but things are picking up: a mysterious man has appeared at his front door and armed men have stormed his brother's law firm. Hawkins will discover his brother has been abducted ... and he'll have to take on the kidnappers alone. Captain Ben Lamont has a mission to complete, but it won't be easy. When he and his crew journey through an unexplored wormhole, both ship and crew will face new dangers from a source that none of them can identify. And the captain isn't prepared for what they will encounter on the other side. Mark Pruitt has always been reluctant to take Captain Lamont's place, but he won't have a choice when Lamont disappears and the crew faces an enemy bent on their destruction. It's non-stop danger as the crew confronts the unknown.