"If You Look at The Numbers On My Face, You Won't Find 13 Anyplace."

"What are you reading, Mandy?"

"A DM some random dude sent me," the dark-haired teen in the passenger seat replied.

"HA, look at this," she continued. "Hey Batgirl, see if you can solve my riddle in TIME to stop my latest caper. Wait, why is he calling me Batgirl?"

The car's driver, Mandy's older sister Kristin, sighed.

"Maybe because of that selfie you posted on Halloween where you had on that Batgirl costume? And that's still your Profile pic."

"Oh, that's right," Mandy said smiling, "that pic got like 30,000 Likes."

"Who's the guy that sent it?" Kristin asked.

"His screen name is DA RIDDLER."

"And I suppose his profile pic shows him wearing a green suit with question marks all over it?" Kristin replied giggling.

"Wait, how did you know that?"

"How original, naming himself after a Batman arch villain. Of course, he goes all out and buys the costume"

"So, wait, Batman has villains?"

"Oh my God Mandy. How do you not know that?" Kristin said pulling the station wagon into a parking lot in front of the diner the sisters worked at. "You dressed up as Batgirl on Halloween. You should know a little bit about the story."

Mandy smiled and said "I picked the costume because I looked cute. And 30,000 people agreed with me."

Kristin shook her head and exited the car. The sisters were dressed in matching mint green waitress uniforms. The 17-year-old Mandy wore dark tights and black flats, while the 19-year-old Kristin accessorized with white knee high socks and white Nike tennis shoes with a mint green swoosh. The five foot one Mandy wore her long black hair pulled into a high ponytail while the five foot two Kristin wore her naturally curly dark brown hair down past her shoulders.

It was a slow night at the diner, just a couple of regulars showed up. Both girls were disappointed in the meager tips they received for the night. The cook told them they would close the diner early, at 8 o'clock instead of 9. Mandy spent most of the last hour watching the clock slowly tick by, while Kristin was doing most of the work required to close shop. One time Mandy glanced at the clock; a light bulb went on in her dimly lit brain.

"I got it!," she shouted.

"Got the ketchup bottles put away, the garbage taken out?" Kristin answered as SHE was putting the ketchup back in the cooler.

"No, silly, I got the riddle. If You Look at The Numbers On My Face, You Won't Find 13 Anyplace. It's a Clock! Look at the clock on the wall, there's no Number 13."

"Uh, duh," Kristin replied as she dragged the garbage out.

Mandy went right to her phone and typed a DM to DA RIDDLER.

"Hey cutie, I figured out your riddle. It's a Clock, do I get a prize?"

Kristin returned to the counter where Mandy was sitting on one of the stools. She saw Mandy typing into her phone.

"You're not messaging that creepo, are you?"

"Yes I am. I think I know who it is. Look at his profile picture," Mandy said. I think it's Greg Brady, that really happening guy at my school."

"Mandy, this guy is wearing a green mask, you can't tell if it's Greg Brady. Besides, I thought he was a creep?"

"He's just shy. Greg's been making eyes at me lately, I bet it's him."

Mandy's phone beeped; she had a new message on Instabook. She read it out loud, as Kristin again walked into the back room to finish work.

"So, you solved my riddle so I assume I will be seeing you soon, trying to stop my crime."

Mandy chuckled.

"Ah he wants to meet."

Mandy typed another message.

"But I don't know where you are."

Her phone beeped right away.

"You figured out my riddle, but you don't know where I am? You're slipping Batgirl."

Mandy responded with a message.

"If you want to see me you have to tell me where the party is."

She got another immediate response.

"I guess I have overestimated you Batgirl. Come to the Acme Clock Factory. But you better hurry if you want to get here ON TIME."

Just then the lights turned off in the diner. Kristin walked back to the front dangling her keys.

"I finished all of YOUR WORK MANDY; Let's get out of here."

"OK, but you're going to have to drop me off somewhere later."

"Where are you going?"

"To a party. Greg invited me."

"Greg? Why do you want to go to a weirdo party with some guy who dresses up as the Riddler?"

"Have you seen him? he's cute," Mandy answered, holding up the profile pic for Kristin to see again.

Kristin started the car.

"Where is this party?"

"The Acme Clock Factory. It's somewhere around here."

"I'm not driving you all the way back out here. I'm responsible for you while Mom and Dad are in Bulgaria for a year opening Outdoor Man Eastern Europe stores. And I don't think they want you going to lame parties at some sketchy place."

Mandy sighed heavily.

"Just drive past there and let's see what it's like."

Kristin grunted.

"Fine, what's the address?"

"I knew you'd come around Kristin. You'll have fun."

"I'm not going to the party, especially not dressed like this."

"Oh right I forgot. He CAN'T see me like this. You go in Kristin and tell me what it's like. He won't care how you're dressed. Then we'll go home, I'll change into something cute and then come back."

"No, we're doing a drive by to check it out. Now what's the address?"

"5800 Franklin. I pulled it up in Google Maps. Take the next left and then a right on Franklin."

Kristin followed the directions into a deserted part of town.

"This is creepy Mandy do we have to go?"

"Ya ya, it's right up here."

They pulled in front of an old brick 3 story building, with Acme Clock Company written in old, chipped paint.

"Mandy, there's no cars here, there's no party going on."

"Just pull around to the back. There's probably a door back there."

Kristin did as her sister asked. There were a couple of old panel vans parked in back. Kristin pulled the car to a stop.

"I don't see a door."

"Over there. Over there. Just run in and see if it's lame. Greg won't know you're my sister. He would expect someone way more stylish than you."

"Mandy, I'm waiting in the car. Run in and come right back out. Then we'll go home and stay there. I can't believe I let you talk me in to this."

"Oh fine. Just give me your name tag, I'll wear that, so he thinks I'm you. Then when I come back dressed cute, he'll know it's not you."

"We're not coming back Mandy. And you're not wearing my name tag."

"That's what you think. Ok, see you in a few," Mandy said exiting the car and hurrying off to the loading dock door.