I would do this slightly differently, tell me what you think
1. Initial roll off for the lie
2. If interrogator wins, torture roll once disbelief is set in, followed by a medical check to see if there’s an injury given
3. Additional torture rolls, each giving an injury no matter what as the interrogator loses their calm.
4. Once 3 injuries received during interrogation, interrogated person falls unconscious. If this occurs brainwash (but not amnestics) is also off the table as they need time to recover. (Because before they would die and that’d lose you brainwashing ability, that IMO should remain the same)
This is a higher risk, higher reward system that I think both sides of an interrogation would enjoy more