It's lit using standard lights, no gi but and a touch of AO in C4D default render engine. I didn't apply DOF in the app as I had initially intended (just didn't have time), so i roughed it in photoshop on the second image.
I had decided to have a more kitchen sink drama/murder mystery take on number 4 the babysitter with this one (though it could equally work for number 3). Aiming to give more tension through framing and viewing it more as a mid shot from a sequence (here we see the assailants pov, tension through not showing... well anything, previous shots would have been of the babysitter going to the kitchen, all close ups, e.g. headphones, closed eyes, hand of assailant clenching in anticipationm, then this.. the thlot plickens =O ).
Anyhow apart from the cabinet textures and geo changes I'd still alter a number of other things if i had time, e.g. something albeit very bleached out throught he window, some more creative use of shadow etc. Maybe if i get another free patch before this challenge is over I'll revisit it.
and then with a little postwork