Marion takes us along Paris's Canal Saint Martin, which is part of a waterway network that measures one hundred thirty kilometers long. In their heyday, the Parisian canals were the main means of transportation of goods and materials, and even drinking water! Nowadays, historic buildings, restaurants, and concert halls are the main attractions along the canals.

Aldo takes us to a very special house on 23 Rue Beauregard in Paris. In that house lived a shady character, Catherine Deshayes, who was responsible for the murder of thousands of infants. She and 36 others were burned at the stake by Louis XIV.