An invitation to the prince's ball arrives.
The answer for this answer would be 1 because
A.) He can't bring himself to arrest his old friend. Twenty years before, the two friends decided that they would meet there at the restaurant whatever the conditions of their health or wealth. When Bob arrives at the restaurant, he finds that his best friend has turn into the most wanted man in 3 states. He still loves his friend, so he doesn't want to arrest him. Instead, he sends a plainclothes man to do the job.
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The first one would be it