Book One: Chapter 4, A Case Of My Own Summary

The Barker case not only invigorates Mary, but leads to the capture of a dozen German spies. She returns to University feeling refreshed. Mary begins to show an interest in running the farm, asking Patrick questions that include the future for the farm after the war. Holmes changes in her absence, noting her blossom into womanhood and develops a cautious demeanor around her. They go to London several times together where she also notices and recognizes Sherlock's mortality.

Patrick tells Mary about a burglary at the local Inn, and Mary remembers Holmes telling her about two others in the area. Holmes is abrupt with her, telling her to take the matter up with the local constabulary, and she goes down to the Inn herself to have a look. Holmes...