After taking Lee to Gotha, Gorm wants me to find his spy Osch in Trelis. I'm told that Osch is in the Trelis compound prison (no trace), might be dead or is with Thorus, whose whereabouts are unknown - "planning an attack." Can't proceed with main quest (the only live one) until I report to Gorn after tracing Osch.
Search answers are mostly in German, Bogdan's on YouTube is useless, it just runs through what I've done, gets back to Gorn with no dialogue options except "teach me to fight." Advice, please (I have two games stalled at this point!)