Crossword: Paris: Underside of the capital

Descend into the endless labyrinths of Parisian bones toward the final urban mystery.

Crossword clues

• A shunned disfigured genius living by an underground lake under the theater
• A singer whose voice awakened the genius from dark basements
• A palace with an underground reservoir where the phantom composer hid
• A palace whose ruins are guarded by the legendary Red Man
• An alchemist whose coffin under the city streets turned out to be completely empty
• A gloomy fortress with underground cells remembering a prisoner in an iron mask
• A covering that hid the face of the underground prisoner and the phantom of the opera
• An underground hall paved with even rows of human skulls and bones
• A cathedral with an ancient underground archaeological excavation and chimeras on cornices
• A sacred underground burial vault under ancient arches
• An ancient city sunken in centuries buried under modern pavements
• A necropolis from whose basements crawl spaces lead to abandoned mines
• A music house under whose box number five the steps of an invisible one are heard
• Abandoned limestone workings that became a refuge for nameless shadows
• An underground city of six million souls under bustling boulevards
• A monument to the Innocents where the overflowing graveyard gave rise to an underground cult
• A district with sewer tunnels where hidden predators are said to dwell
• A tangled network of drifts where it is easy to perish without a guide
• A building with secret underground passages from the times of the commune and revolutions
• A baron who redesigned the city and created a giant network of underground sewers