Hmmm, well, very little talking.
Once I've begged him not to kill me, I'd probably start holding up pictures:
'So, which one do you want to kill?'
*point*
'Are you going to kill him now?'
*shakes head*
'Are you going to kill anyone now?'
*nods*
'Him?' (a picture)
*shakes head*
'Her?' (another picture)
*shakes head*
'Him?' (yet another picture)
*shakes head*
'Uh, me?'
*nods*
'You said you wouldn't!'
*takes a step towards me*
'Oh shit...'