St. Eligius' 50th anniversary spurs memories, including: it's opening in 1935 under the leadership of Father Joseph McCabe, the arrival of recently emigrated Helen Rosenthal and Mark's return as chief of surgery, Mark's bypass on Patrick O'Casey and the death of Maureen Westphall. Morrison struggles to diagnose a difficult patient and cope with the loss of Pete to a kidnapper.

A depressed Father Joseph McCabe returns to St. Eligius; Morrison receives a visitor from Seattle; Dr. Craig seeks help for his injured hand from an old classmate; one of Axelrod's patients awakens in the morgue; and Luther plays musical air conditioners.