The fear Diels felt grew more pronounced, to the point where in March he again went to Martha for help, this time in hopes of using her to acquire assistance from the U.S. embassy itself. It was a moment freighted with irony: the chief of the Gestapo seeking aid from American officials. Somehow Diels had gotten wind of a plan by Himmler to arrest him, possibly that very day. He had no illusions. Himmler wanted him dead.