“Merritt was in a position to access the cellular telephone tower northeast of the McStay family gravesite on February 6th, 2010, two days after the family disappeared,” an affidavit for his girlfriend’s call records reports Hemisphere finding (PDF). Merritt was arrested almost a year to the date after the McStay family’s remains were discovered, and is awaiting trial for the murders.

In 2013, Hemisphere was revealed by The New York Times and described only within a Powerpoint presentation made by the Drug Enforcement Administration. The Times described it as a “partnership” between AT&T and the U.S. government; the Justice Department said it was an essential, and prudently deployed, counter-narcotics ...