How to bake a dark shadow without light?

As questioned above, can that be achieved?

I bought the London Apartment file and i’m trying to achieve that quality of render but I have tried a lot of method and failed to do so. As for the file itself, I assume the static lights have been removed after baking it therefore I have no clue on how to achieve it.

Really need help here… Thanks in advance.

Here’s a screenshot on what I’m trying to achieve.

Are you sure the light sources are removed? Have you checked outside the windows? There are probably white planes/spotlights or only spotlights to imitate area lighting.

I’m not entirely sure, but i have tried removing all light’s and reflection spheres. Funny thing is, after i rebake the whole scene, the shadow still remains… How to achieve this?