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 Rovan Binary is the 12th book in the PIT series. The PIT team continues to pull at the thread of the Rovan mystery by visiting another suspected colony. Though they find more clues, the next choice they must make threatens to tear the team apart...

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 Gate is the 15th book in the PIT series. Just as it seems that the PIT team has learned the answers they sought about the Rovans, the team uncovers one last lead so tempting that they decide to stall the coming confrontation with Ambassador Shiny to investigate another legacy of the Rovan civilization.

The Rovan Trap is the 13th book in the PIT series. The PIT team struggles to survive in all-too-close proximity with a Rovan battleship designed to exterminate all who fall into its trap. If Telisa and her team cannot escape this uncaring death machine-- who can save them?

The Rovan Gate is the 14th book in the PIT series. Having escaped the Rovan trap, the PIT team returns to the binary star system Guiholda Conchallon, hoping to learn more about how the Rovans lived, but instead, they discover more about the Rovan’s demise.