Answer:
Mr. Winter had asked harriet to babysit even though she has never seen him before; this gave out signs that something was off about the Winter family.
Step-by-step explanation:
From this story, Harriet has been asked to babysit Charles, the baby of the family. But she did not quite understand why she was asked to be a babysitter for Charles. She had met the man at a swim club and just like that he requested that she helped babysit with no prior knowledge of themselves. While at the house she is instructed to not look in at the baby. This seemed weird and it gave her the feeling that there was something wrong happening in the Winter family.