When he looked up again there was a strange sadness in his eyes.

It was not menace they projected but a strange, inhuman sadness.

A strange sadness seemed to flicker across him, and he was silent for a moment.

Yet now that the day is upon Us I feel not satisfaction but a strange sadness.

He looked over at Wilkes again, a strange sadness filling him.

My anger had disappeared and given way to a strange sadness.

It was a tranquil feeling but she also knew a strange sadness.

There was a strange sadness in the way he said it.

A strange sadness filled him, as if he almost regretted the end.

I can't describe the tone in which he said that, but it was sad, full of a strange sadness.