What is the word when someone does something nice for you then does something bad?

For example, someone gives you a ride home to your house. And then later on comes back to rob you. What's the word used to describe the circumstances or the series of events?

closed as off-topic by AmE speaker, Scott, JMP, Spencer, AndyT Jul 20 '18 at 11:16

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  • 2
    Did they give you a ride in order to case your house? Was the whole thing a con? Or was was it just opportunistic for them? – Jim Jul 18 '18 at 4:02
  • Yeah, it would seem like there was no niceness in any of his actions. – user191110 Jul 18 '18 at 17:03
  • Jim brings up a good point, the intention of the person is critical in providing the right word. – ForgetfulFellow Jul 18 '18 at 17:04
  • I would think genuine niceness, as the alternative is some form of manipulation or sociopathy which are straightforward – Stu W Jul 18 '18 at 17:16
  • There's a short, pithy two word phrase for this -- you were set up. – Spencer Jul 19 '18 at 3:15

This could be considered an about-face

a reversal of attitude, behavior, or point of view

As in:

He seemed nice when he gave me a ride home, then did an about-face and came back and robbed me.

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