Pennanen, The Catalyst

In the final chapter of the Black Table trilogy, the crew of Unity find themselves stuck in the past, surrounded by Breathers and their devastating technology. With the brightest minds at their disposal, the crew comes face to face with the legend of an ancient weapon, the Catalyst. Is this mysterious artefact the answer to the fight against the Breathers, a way home, or something else? How do they find it, and what would it cost them? Once again, Jon and Gus must pull every trick they have...