Scott, Lydia and Stiles attempted to find 'Molly' in the dictionary, which they found, but neither was the definition they thought.

Scott read the definitions aloud. ""Molly is a any of various small, often brightly colored tropical fish (genus Poecilia) that are live-bearers found in fresh, brackish, or salt water and include several that are highly valued as aquarium fishes." And then there's this one. "the illicit drug ecstasy (see ECSTASY sense 2) especially when in a powdered or crystalline form contained in a capsule.""

Lydia frowned. "Yeah, somehow I don't think these are the Mollies we're looking for."

Stiles sighed. "It's not even the right definitions." He pulled up the name on his phone. "Molly means 'star of the sea'."

Scott looked at his friends hopefully. "Maybe Malia's found something."

Lydia shook her head. "No, Malia's been in a make-up test all morning."

They heard howling and Lydia sighed. "I don't think it's going well."

The teens made their way to the basement.

Scott said to a shifted Malia, "Malia, it's okay. You're safe. I'm not gonna hurt you." She growled.

Sheriff Stilinski glanced at Scott. "Maybe you should growl back? Scott, you're the alpha. Can't you just make her a little docile?"

Lydia looked between her friends. "Back up, guys. She isn't the problem. We are. We're in her space. This is her territory. Let's get out of here."

They backed up and Lydia raised her voice. "Malia used to come here to get through the full moons, before we started using the lake house."

Ms. Martin narrowed her eyes at her daughter. "I thought you said a wild animal got in the lake house."

Lydia shrugged. "Just be happy about all the things I don't tell you."

Malia let out another small growl and her coyote form stalked towards the group as she shifted back into a human. She smiled lightly. "It's all right. I'm okay."

Ms. Martin handed Malia her clothes as the sheriff asked, "Any idea what made her shift?"

"She's under a lot of pressure," Scott replied. "School, her life after graduation."

"Her mom trying to kill her," Lydia added.

Scott glanced at her. "That shouldn't make her shift."

"Could it be connected to Molly?" Stiles asked, smiling briefly at the name.

Scott shrugged. "Hard to tell since we don't know what a "Molly" is."

"It's a "she"," the sheriff said. "This guy, Dean Winchester, has a friend who asked where a Molly was."

"Who?"

"Molly. The man in the trench-coat asked where Molly was."

Scott, Lydia and Stiles made their way to Sam and Dean's place when they were in town to speak to them.

The sheriff grabbed a photo from the his pocket, met the teens and held it out to the teens. "He was an Army engineer. Ended the war one bridge at a time. He may know something."

"And he went by Stiles," Scott said, reading the name in the corner of the picture.

"So what's all this got to do with the Wild Hunt?" Sam asked as he walked up. "Hey, Noah."

Stiles looked up at Sam. "We think someone was taken from us."

"Any idea who?"

Scott shook his head. "Uh, the Ghost Riders would have erased our memories."

"Well, now, that's convenient."

Stiles fiddled with his hands. "We did find a clue. The word Molly."

"And that's why you want to talk to Elias?" the sheriff questioned.

Scott said, "Yeah. We think he might be able to help us figure it out. Maybe he knows what we're looking for."

Sheriff Stilinski took the photo back from Scott. "Now is this someone your age?"

"Yeah, I..." Scott paused. "I think they were my friend. Maybe they were one of my best friends. And they might have been Stiles' friends, too."

"I guarantee you my father can't help you."

Lydia narrowed her eyes. "Can't we try?"

"Scott, Stiles, Lydia, he lives in a nursing home three towns over. Hasn't had a visitor in years."

Lydia asked, "Would I be able to use your bathroom?"

Sam nodded and smiled. "Sure."

Lydia walked slowly down the hall deep in thought.

Sam's voice caught her attention. "Lydia? Did you find it? The last door on the left."

Lydia placed a hand on the door. "Found it."

Instead of going in, she stood against the opposite wall for a moment and closed her eyes.

The teens left the boys' home and Liam met up with them and asked, "So what do we do since Stilinski said no?"

Scott sighed. "Well-"

"But you're going to anyway?"

"Yeah."

Liam shifted nervously. "Or you could stay here and help me convince Gwen she's in danger."

Scott shook his head. "It's not your job to convince her. It's your job to keep her safe."

Malia shrugged. "Just kidnap her."

"We'll be back later after we talk to Sheriff's father."

Liam frowned. "Okay. What if the Ghost Riders show up?"

"Then you'll handle it, Liam. And look, you're not alone. You've got Mason and Corey and Hayden. Okay? Just find a safe place for Gwen and keep her there."

"Any suggestions?"

"It doesn't matter as long as she's safe."

"Kidnap her," Malia repeated.

"Don't kidnap her."

They made their way to the nursing home where Elias Stilinski was.

Scott looked up at the building. "I can't believe we're about to break into a nursing home."

Stiles pursed his lips. "Anything to get this Molly back."

Malia nodded and picked up her pace. "After the orderlies at Eichen House, pretty sure we can handle some nurses."

She slammed the nurse's head on the desk and locked him in a closet.

The teens walked into the day room and found an old man listening to old trumpet music. He turned and asked, "Yes? Is it time for my medicine?"

"We don't have your medicine," Malia replied bluntly.

The man's face fell. "Oh."

"Are you Elias Stilinski?" Lydia asked.

"I am."

"I'm Lydia Martin. Do you know who I am?"

Elias frowned. "Should I?"

Scott spoke up. "Hey, Mr. Stilinski, we're looking for somebody who might be named Molly."

Stiles walked up to him. "You went by the name Stiles in the Army, right? You like Molly fish, right? This Molly isn't a fish. Or a drug."

Elias nodded. "Yes. Best years of my life."

"Do you know any of us?" Lydia asked.

"Of course I do," Elias replied, turning to Scott. "How could I forget my own son?"

"Your son?" Scott repeated, exchanging a look with Lydia.

"Mr. Stilinski. What year is it?" Lydia asked.

"1976," Elias answered. "It's my son's birthday next week."

Lydia sighed softly. "He has dementia."

"Is it time for my medicine?"

Scott looked at Elias. "My name is Scott McCall." He gestured to Stiles. "This is-"

Elias shook his head. "Scott McCall? No, no, no, no, no, no. You're my son."

Malia frowned. "Keep it down, old guy. You'll wake the other old people." She saw a plate of food and started eating from it.

Elias frowned. "I don't like her."

Lydia knelt in front of him. "Your son. He's the sheriff of Beacon Hills."

"Sheriff? No, no, no, no, no. No, no. I was in the Army."

"Use your claws, Scott," Malia said.

"It could kill him," Scott protested, shaking his head.

"I get that, but we're running out of time."

"I can't."

Malia sighed and flicked her claws as she walked closer to Elias. Scott grabbed her wrist. "Hey! No. We're not hurting him."

Elias looked at Malia disapprovingly. "Young lady, you need to clip those nails."

Malia glared and opened her mouth, but Elias continued. "You shouldn't be here. If you don't leave, I'll have to report you."

Scott flicked his eyes to Lydia and Stiles. "Uh... What's wrong with him?"

Stiles glanced out the window. "The sun went down."

"So?"

"He's sundowning. It's when dementia patients lose their faculties after the sun goes down."

Elias' breath began to quicken. "I don't want to talk to you anymore!"

"So what do we do?" Malia wondered.

Lydia shrugged. "We wait til the sun comes up."

"We can't wait that long."

Scott nodded. "There's gotta be something we could do to keep him quiet."

"Leave, leave, leave, leave," Elias repeated as he sounded close to hysterics.

"I can calm him down," Malia said.

"No!" Scott, Stiles and Lydia yelled.

Lydia grabbed a piece of paper. "Hey, look at the equations. Look. It's binomial probability. What's 'P'?"

Elias relaxed a little. "Um, probability of success?"

She nodded. "Right. Uh... And that means N minus K is?"

"Uh, number of trials minus the number of successes?"

"What's with the math?" Malia asked.

"It allows dementia patients to concentrate. And this one?"

"That's, um... Conditional probability," Elias said.

"Let's find the moment of inertia," Lydia suggested as Elias glared at the paper. "Elias?"

He shot her a dark glare. "That's Mr. Stilinski. Just who the hell do you think you are?"

"You know that Scott isn't your son?"

He looked to her and scoffed. "Of course I know that. Just like I know Stiles is my grandson. Are brains getting smaller with the skirts?"

Malia, who was wearing a small skirt, growled lowly and Scott whispered, "Malia, it's okay."

Elias looked at Scott. "So you're that McCall kid."

Scott nodded, widening his eyes. "You know me?"

"I know your dad. Couldn't hold his liquor and he certainly couldn't keep that wedding ring on his finger. Pretty young thing would walk by and poof, that ring just disappeared like magic."

"Do you know all of us?" Lydia asked.

He turned back to Lydia. "Oh... You're Natalie Martin's girl. Am I right? You look like her. She was pretty once, too."

Malia's eyes flashed steel blue. "Stop talking."

"Hey, Malia," Scott called.

Elias turned his attention back to Lydia. "And she also liked to talk like she was the smartest person in the room."

Malia growled and stepped forward, flicking her claws.

"Malia!" Scott yelled.

"Enough," a new voice told them.

The teens turned to see the sheriff, Sam and Dean entering the room with the nurse Malia had knocked out and stuffed in a closet.

Scott started trying to explain everything. "Sheriff, we..."

The sheriff cut him off. "I explicitly told you not to come here. And who attacked a staff member?"

The nurse pointed to Malia. "That's her."

Malia growled lowly and the sheriff glared at her. "What the hell were you thinking?!"

Elias looked up at his son. "Noah. We were just having a nice conversation."

Sheriff Stilinski glared at the teens. "The four of you. Out. Now. Stiles, you and I are gonna have a long conversation about obeying."

Stiles stood, slowly following his friends out. He paused at the door hearing Elias say, "Noah. That's right. Act like I'm not even here. Go crawling back to your conning friends and that half-sister of theirs!"

"What did you say?"

Elias calmed down. "Is it time for my medicine?"

At the station, the teens were being reprimanded by Ms. Martin.

"We know it's bad," Scott said.

Ms. Martin frowned. "It doesn't look bad, Scott. It is bad. You broke into a nursing home, you harassed a dementia patient, and you beat up a nurse. This could affect the rest of your lives. Especially you, Malia. They're talking felony assault."

Malia frowned. "I didn't beat him up. I could have, but I chose not to."

"That's an improvement," Lydia told her mom.

The sheriff frowned at them. "By some miracle, the nurse decided to drop the charges. They're free to go."

Ms. Martin glared at her daughter. "Just because you're not going to jail, doesn't mean you're not grounded for all eternity."

Stiles let out a frustrated sigh. Finding whoever this Molly was seemed to be getting more and more unlikely.