[He originally wanted to throw away the hairpin in his hand, but it wasn't long before he saw the Park Director walking towards this side.]
[How can you be slacking off during work hours? Even if there are no visitors, you should be working properly as long as your shift isn't over!" The Park Director woke him up with these words. He responded meekly, but in his mind, he was thinking of another way to handle it.]
[All he needed was a chance for contact.]
...
An out-of-place white pearl, no matter how conspicuous, was something they could not definitively determine the significance of, for the moment.
So far, the clues the three had found were: the murder was premeditated, the victim died before five o'clock, a large-sized sports jacket possibly left by the murderer, the murderer's and the victim's strength were similar, the victim might have been cheating, and the seemingly significant white pearl.