Bob and Tom, who had known that the three medics were vampires, began to devise a plan. They will run the night shift to see the strangeness in the hospital at night.

"Are you two serious about going to work tonight? Didn't you work this morning?" asked the senior who is also a hospital cleaning service.

"Yeah, we are fine. We have no other work today, so we can replace your shift," replied Bob.

“Ah, I feel indebted to you, guys! All right, good job, I have to spend tonight for a family event. It's my wife's birthday,” replied the man happily.

"Okay, have fun," said Tom.

“You guys too,...