While Artie tries to get back to work, Pete and Claudia investigate a radical activist from an environmental group that may be tied to an artifact... and who is killing off each member of the group that disbanded 30 years ago. Pete and Claudia investigate a series of accidents involving earthquakes, sinkholes, and landslides, while Myka and Steve try to help Artie adjust to a Warehouse without Leena.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
The Regents forgive Artie and give him Leena's video statement. Pete and Claudia travel to Cowan National Forest where a well-dressed businessman has been buried vertically in the forest. Meanwhile, back at the Warehouse, Myka and Steve are trying to keep an eye on Artie trying to work his way through a list of Leena's duties, including placing new artifacts. Artifacts: Norge 's Porthole, Soccer Ball, Remote Control Car, Da Vinci 's Gargoyle, Courrières Mine Miner's Lantern