"The train arrives at 8:10," Longtree says, "so we have enough time to check into her room at the Two Horns."
You take a cab back into Avebury, where you ask about Harrington, Ferencz and the others, but find out nothing you didn't already know. Before disembarking, however, the cab driver pointed out the Two Horns. The clerk inside the hotel was reticent and maintained that giving out the room numbers of guests was against hotel policy, but he offered up the information freely once he realized there were two men from the Yard present.
"Harrington? Yes, I remember the lady, quite an attractive one she was." When he sees Longtree's grim expression, he gives a start. "Room 47, end of the hall."