 Deryn sends one message about suspicious walkers, then dons gliding wings to investigate.She semaphores C-A-M-E-R-A in time, but injures her knee on landing.Alek gets Pancho Villa's physician, Dr. Azuela, to treat Deryn instead of the ship's Dr. Busk, but Eddie Malone overhears Deryn's secret when Azuela tells Pancho Villa.