Can someone explain me again what is going on and what arc this is now

Now they are searching for the person that requested the stolen ink (The director of the underground hospital or smth like that, which is weird since Victor already killed him). They already found the person who stole the ink, and that Theon is related to the situation. We also, see a bit of Victor's back story but it's still unclear.

Thank you!!

Np! But this is whta I understand so far... (English is not my first language so I'm not sure at 100%)