Thank you so much for your support and advice. When you're in something like this, it can be hard to see it clearly. I am so utterly shocked. Until now, I've considered them to be the absolute best family I've ever worked for. Their mom is responsive and attentive to them, she communicates well with me, and the other twin is a happy, thriving, extremely gifted child. Toby has had some behavioral problems; he's had tantrums, mood swings, and he's even hit/kicked/ or bitten me in anger before, but there was never anything like yesterday. Never anything that I would consider being outside the realm of just a difficult child. Yesterday though, he got angry, stewed on it, waited, and then sought out to hurt me in the best way he could. He waited until his brother was alone with him (that split second when I vlosed the car door) to hurt him. I am completely shocked. I have never seen anything in their household to justify this. They don't have pets, thank God. I do wonder if there are deeper psychological issues at play here with this child and whether he needs to be seen by a behavioral specialist and under the care of someone more trained than I. I have a psychology degree, but this is way out of my depth. I'm worried about my ability to handle it as well; I was SO angry with him after yesterday, I worry that in the future, I won't be able to remain calm, and might end up spanking/slapping out of anger, which I have never done to any child. That anger scares me. You're all right, time to move on