You put a lot of trust in the nanny or sitter, giving them access to and significant time with your children. You probably agonize over who to hire, and who would best meet the needs of your tiny darlings. You’ll get references and, of course, you’ll install the nanny cam to find out anything you’ve missed.
In this case, it was a good job that the parents did install the camera. The mom was confused about why the children would never sleep at night after being with the sitter. It turns out that the sitter was dosing them up with medicine so that they’d sleep all day and not bother her. Aside from being really dangerous, this is not really what she was paid for.