Erik Sondergaard's internal struggle with grief and long-term defensive posture as he reveals his past and the crimes of his people

The survivors enter Sondergaard’s hidden laboratory, a stark contrast to the claustrophobic mines they fled. He removes his protective gear to reveal a cheerful bald man with a European accent, …

Sondergaard and the Doctor examine ancient stone tablets in his collapsing lab, deciphering fragments of Solos's genesis myth. Their work reveals a cyclical chemical process linked to Solonian life cycles, …