 Who was in the black sedan that rushed off past Tremaine a block from the hotel?
In his room at the Elsby Commercial Hotel, Tremaine opened his luggage and took out a small tool kit, used a screwdriver to remove the bottom cover plate from the telephone. He inserted a tiny aluminum cylinder, crimped wires and replaced the cover. Then he dialed a long-distance Washington number and waited half a minute for the connection. Now I want answers, not questions! Tremaine left the hotel, walked two blocks west along Commerce Street and turned in at a yellow brick building with the words ELSBY MUNICIPAL POLICE cut in the stone lintel above the door. "Jimmy," he said, "Jimmy Tremaine." In a back room Tremaine said, "To everybody but you this is just a visit to the old home town. Tremaine covered the discovery of the powerful unidentified interference on the high-security hyperwave band, the discovery that each transmission produced not one but a pattern of "fixes" on the point of origin. It showed a set of concentric circles, overlapped by a similar group of rings. "I think what we're getting is an echo effect from each of these points of intersection. "The point is this, Jess: we think we've got it narrowed down to this section. "Mr. Bram," repeated Tremaine. They used to raise cain in the other drug store...." Him and a bunch of his pals went out to Bram's place one night and set it on fire." I had the whole caboodle locked up here for six hours.
 Grammond’s men
 Jess  Mr. Bram  The men who stole the transmitter  Grammond’s men