He had resolved to ensure his silence; and he looked to the end, not the means.

The lure of that money would ensure her silence.

"If I could not- ensure her silence any other way," he said after a moment.

So we have to ensure your silence for a few hours.

You had all of the other scientists killed to ensure their silence.

If they did not, perhaps they would understand that it was necessary to ensure their silence forever.

And I saw his struggle as he tried to piece together what to say to me to ensure my silence.

The Vatican, who simply wanted to ensure his permanent silence?

Death is the penalty - not only for failure, but to ensure their silence.

Which would make them collaborators and help ensure their silence.