Yes, it was not only right for me to speak; it was my duty.

Rad should not be allowed to sacrifice himself.

The truth, at whatever cost, must be brought out.
My first move must be to discover Jeff's whereabouts on the day of his father's murder.

It ought not to be difficult to trace a man who had come more than once under the surveillance of the police.

Having made up my mind as to the necessary course, I lost no time in putting it into action.