While investigating Lester's mysterious "accidental" death, the clues lure Charles, Oliver and Mabel out of Manhattan - and straight into some dangerous new "old" territory.
A look back at Lester's early days at the Arconia reveals how a young dreamer became a steadfast doorman - sacrificing his future to protect the residents from the building's secrets.
The trio stumbles upon a crucial piece of evidence - and promptly compromises it. With time running out, they scramble to solve the mystery before the police close in on them.