I don't think that there is any way to do this painlessly.
As one father to another family consoling would be a better option.
But any camera that has good zoom lens and low light would do the job. John
I have a daughter who has a spouse that is having an affair and I know that I the ability to catch this individual on video. What would you recommend as far as a video camera is concerned that would give the best magnification and light collection for the price. I would like to keep within the $500 to $1000. I will not be at any physical risk, I would just like to get this over with as painlessly as possible.

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