"After some time the last employee working at the restaurant left and the owner and those two were the only two people in the restaurant, then Jim and Carl too entered the place, the old man first didn't let them in but I was not sure what they said and he let them in and after a minute or so the lights of the restaurant were all turned off and Dan was not in his spot which implied he switched off the power.
I quickly entered the restaurant from the back door, since I have been visiting the place multiple times I knew about every entry and exit so I quietly entered the restaurant and hid behind the cash counter, then you guys tied him and waited for him to get conscious, after that when you guys asked him about the diamonds and were about to kill him I came out of my hiding and you know the rest"
Everyone now understood what exactly happened and were silent.