The Celaran Ruins is the sixth book in the PIT series. Telisa Relachik studied to be a xenoarchaeologist at a time when humans had found alien artifacts but hadn't encountered live aliens. She joins a group of artifact smugglers and ends up with a life more amazing than she could have imagined. Forced into service by an alien she once befriended, Telisa, along with Cilreth, Siobhan, Caden, Jason and Imanol are sent to a distant world to investigate a mysterious alien race for their new master.

Telisa Relachik studied to be a xenoarchaeologist in a future where humans study alien artifacts but haven't ever encountered live aliens. Of all the aliens whose extinct civilizations are studied, the Trilisks are the most advanced and the most mysterious.Telisa refuses to join the government because of her opposition to its hard-handed policies restricting civilian investigation and trade of alien artifacts, despite the fact that her estranged father is a captain in the United Nations Space Force.When a group of artifact smugglers recruits her, she can't pass up the chance at getting her hands on objects that could advance her life's work. But she soon learns that her expectations of excitement and riches come with serious drawbacks as she ends up fighting for her life on a mysterious alien planet.

The Trilisk Supersedure is the third book in the PIT series. Having secured an amazing new base of operations that provides for their every material need, Telisa, her fellow smuggler Magnus, the alien Shiny, and the new recruit Cilreth head out on their third expedition in style with robots and advanced Vovokan technology at their fingertips. Their target is the fourth planet in the Chigran Callnir system, a place known to be the site of a Trilisk colony. The team soon finds out the ruins are not as dead as they thought, and they aren’t the only ones interested in the legacy of the Trilisks.

The Kriseel Ruins is the 16th book in the PIT series. When Blackhab scientists report evidence of a live civilization in a system known by the Rovans and Vovokans to be an ancient ruin site, the PIT team investigates.

The Rovan Ruins is the 11th book in the PIT series. Avoiding their alien master at Sol, the PIT team has taken up new homes with the Celarans on a huge space habitat, aided by their Trilisk technology. As they ponder their next move, they hear of new alien ruins in a distant system, discovered by a Celaran probe ship. Uncertain of their future, the PIT team decides to do what they do best, so they leave on a fresh voyage of discovery.

The Celaran Probe is the seventh book in the PIT series. Telisa Relachik studied to be a xenoarchaeologist at a time when humans had found alien artifacts but hadn't encountered live aliens. Rather than return to Earth with the modest spoils of the team’s first Celaran expedition, Telisa decides to proceed to another Celaran colony site in an attempt to find living Celarans. New friends and enemies will be discovered beyond the frontier, while big surprises await the PIT team back home.