Yung-Lung Chen · The Cold City

New York keeps a second city.

Beneath the stadiums, the bridges, and the old civic buildings, a hidden New York keeps its sealed doors — and the immortal guardians who hold them.

The one impossible line

Follow the green line down.

It runs under the platforms and the river, past the places the maps agree to show, to a boundary that was never meant to open.

Book One

Blood Under the Lights

Beneath Yankee Stadium, a night-shift electrician touches the line she was warned never to cross — and the guardian who has held it for a hundred years.

Book Two

Blood Across the River

Across the water, a Queens blood-bank tech gives clean blood to a starving vampire, and opens the next door beneath the city.