Mythological Mercury was the god who, at the behest of the deities, winged his way back and forth from Olympus to the Underworld. In Cinemax’s “The Knick,” directed by Steven Soderbergh, New York City’s Knickerbocker Hospital, at the turn of the 20th century, metaphorically and efficiently does duty as both locations. The hospital’s residential Mercurial […]