That is the only branch of the subject which needs darkness.

He didn't need complete darkness for this stage of the process, so a dim light glowed on the wall.

Kalvah needed darkness to rig things the way he wanted.

"Unlike your monkey friend, we do not need darkness to search," he said.

We'll need darkness to cover us in our fight against these men also.

I picked a time after dark because we might need darkness.

We need darkness ahead of us, not in our wake!

Need deep darkness in the light of day, which is coming very soon.

That was by day, but we need darkness anyway and it's a perfect night for the job.

Dusk was giving place to day, and I needed darkness.