In the fall of 1915, Anton Dilger was looking for a house to rent in Washington. With the help of his sister, Jo, Dilger decided on a quaint white house in the 5500 block of 33rd St., NW, not far from Chevy Chase Circle. It was a comfortable place in a new neighborhood and had a basement that could serve as a home research laboratory. Anton proudly listed himself as a physician in the Washington City Directory, in effect putting out his shingle in the nation’s capital. However, Dr. Dilger didn’t see many patients. He was busy with more nefarious pursuits.