Escape from Another World - Ch. 7

[MangaDex]

 

[nueee]

Thank you!

 

[Moongul]

All that magic but there’s no detect lie skill or something similar.

 

[Burin]

All that magic but there’s no detect lie skill or something similar.

So far, he's the only one to care for the truth. There could be lie detector skills but the prison as a whole doesn't care, the warden or whomever said as much earlier.
Him being from Earth is enough reason to torture him.