It reminded me of case closed, though this one is more realistic and not that shocking. It could be exhilarating to break the law as the lady mentioned after successfully stealing the chips, and it's addictive. Could be useful to have such skill.
The audience is kept secret of the hidden person, which constitutes the final twist.
The actually stolen painting, the man with beard, doesn't fit with the film style; it's a documentary, isn't it.
Using multiple cameras, or cameras with distance sensors could have mitigated this kind of trick.
