A sinister smile abruptly curled the corners of his mouth.

His face, no longer old, was gleaming with a sinister smile.

Brennan tells Graves they know what he did, prompting a sinister smile from the man.

"So, you're seeing the light," Richard said, giving her a sinister smile.

He paused, and his lips tightened in a sinister smile.

It's a cold, sinister smile this moon is smiling.

"Bit more complicated than that," the colonel replied with a sinister smile.

With a sinister smile Deringhouse's eyes followed the bearded giants.

Death Master looked at Blade again and his mouth curled in a sinister smile.

The villain's sinister smile appears to last until his dying breath.