Final answer:
Henri wonders about John's strange behavior and observations on Halloween night.
Step-by-step explanation:
Henri wonders about John's strange behavior on Halloween night. He notices that John and Jennie both have an inexplicable look. Henri finds it odd that John frequently looks at a paper and catches Jennie with her hand on it. Henri also wonders if he can see a woman out of all the windows at once. These observations make Henri suspicious and curious about John's actions.