How can lighting make a portrait subject look evil or sinister?

A classic way to create a sinister look is to use hard, direct light from below the face.

Use a single small or bare light source positioned underneath the subject, aimed upward. This creates unnatural shadows that reverse the way we usually see faces lit, which makes the expression feel creepy or menacing. It’s a common effect in old black-and-white horror films for exactly that reason.

To strengthen the look:

• Keep the light hard rather than soft.
• Use one main light instead of a balanced multi-light setup.
• Let the shadows stay deep for more drama.

The key idea is that underlighting produces unfamiliar shadow patterns around the nose, eyes, and cheekbones, which reads as eerie or “evil” to viewers.