It's not that he's insane, it's just that Walter finds waiting for the man in red maddening. When he discovers Dr. Vanodin may be blocking the man in red, Walter is determined for Dr. V. to see the red...of his blood.
THE EVE LULL is Letter #1 excerpt from LETTERS FROM THE LOONEY BIN...
In the late 1970s the Emerson Rose Asylum became completely abandoned - all the patients, doctors, staff, vanished and were never seen again. The events circling this mass exodus have been one of the most baffling disappearances in history.