That is why the first priority, once public order is secure, must be a thorough and relentless investigation into the crimes which were committed.

Killing him would create a furor, bring about a relentless investigation, an intense hunt for the killers.

Her relentless investigation of her own feelings - befitting her profession as a psychologist - proves exhausting.

All that's needed is a tough and relentless investigation.

As Kenneth Starr conducted his relentless investigation of President Clinton, many Americans were troubled.

Prior to Johnson's arrival on the scene, Newsday had a hard-earned national reputation for its relentless investigations of criminal corruption.

It would be only a matter of time before Thufir Hawat and his relentless investigation uncovered her culpability.

The world endorses relentless investigations, aggressive prosecution and tough punishment for terrorist murderers.

"You know, I feel sorry for everyone who was caught up in this relentless partisan investigation," Senator Clinton replied.

Of more interest than their individual personalities is the larger character of the city, which eventually yields its secrets under the relentless investigations.