Suddenly a disturbing thought jarred the young inventor out of his concentration.

But there was in Gower's expression no hint of any disturbing thought.

He had nearly finished eating when a disturbing thought occurred to him.

Sometimes an aching foot or a disturbing thought cuts off all phenomena.

A new and very disturbing thought had suddenly popped into my head.

I set that disturbing thought aside and lifted the candle from the table.

It was a disturbing thought, that Mildred had set damaged people on fire.

Out of nowhere, a strangely disturbing thought came into Stormgren's mind.

While I reached for the lamp, a disturbing thought struck me.

A sudden disturbing thought flashed upon Alan as he heard his name called.

A disturbing thought creeps into my brain: perhaps the dream means something else.

The expression of pensiveness deepened, increased by a sudden, disturbing thought.

The disturbing thought flitted through Keith's brain: 'I was a fool.

Her attitude, however, indicated intentness of thought, though not disturbing thought.

The thought of the Old Architect dying was a new and disturbing thought.

Then out of the blue, a truly disturbing thought popped into my brain.