Pls can someone tell me wht was going on throughout the entire interrogation? I genuinely...

So basically (spoilers)









Major Yoo the same dude that interrogated dr.Seok the first time is interrogating him about where he was when the shelter was under attack and blew up cause while he was in the jeep with Major Kwak, “mother” the camera was turned off cause they need to talk abt stuff and they weren’t picking up the calls. Except this time he got a thing that gets rid of nails. Anyways Dr.Seok keeps making smart remarks to which he then lifts up a nail till it bled and lieutenant colonel Cha comes in and was sent by Major Kwak to oversee the interrogation but then he couldn’t cause this time Major Yoo got one of the higher ups to put him on for interrogation so there’s nothing Colonel Cha could do. Seeing how this was, Dr.Seok finally tells him he’ll tell him the truth (the next we see if Dr.Seok, he’ll be out of the interrogation room so we don’t know what he told him)

thank you smmm