That is when I saw a spot of blood on the floor.

And the spot of blood after, when she had reached down.

A few spots of blood are hard to find on black.

There was no one inside it, not even a spot of blood on the floor.

He had just noticed the single spot of blood on the floor.

Pulling her hand away, she looked at the spot of blood.

I touched my mouth and came away with a spot of blood.

Not so much as a spot of blood stained her hand.

He couldn't tell if any of the blood spots on the white coat were his own.

Any time you start to have doubts, take this out and look at the blood spot.