stuck & confused

[Juvantei]

Thanks, that's a relief. I just looked at the hint,, I'll try and figure it out again.

(although replying to this comment almost made me read the solution, because it shows what's inside spoiler tags when it quotes)

When you progress out of your cell. Make your way back to Agrippa and the torture table to the left of Agrippa will be gone and a HUGE hole will be there. The Lab will be on the other side. You can figure out the rest there.