A/N: Thank you to AfsanaSanjida and Dramione Winchester-Halliwell for following and favouriting this story, and thank you to turtlelovermikey3000 for favouriting the story.

We eventually found who probably was the culprit - a woman named Constance Welch who killed herself after her two children died. The place that she killed herself was the same bridge where Troy's car had been found, so we headed there to check it out. I couldn't help rolling my eyes at my brothers when they started arguing on the bridge, mostly about Dad. Dean was adamant Dad was here and we'd find him, Sam wasn't so sure. The conversation soon changed to Dean trying to make Sam become one of us, rejoin the family business. When Sam refused, Dean pinned him up against the bridge.

Once they resolved that argument, which I stayed out of figuring it was between Dean and Sam, we turned and saw the ghost of Constance watching us. She then fell into the water and we raced to the edge of the bridge to look for her, but she'd gone. I heard an engine start and looked up to see the Impala lights turn on.
"Uh… Dean? Sam? We have a problem!" I yelled to my brothers, seeing the Impala lights turn on and the car start moving towards us. The three of us began running away from the car, but it was gaining on us fast. "Jump!" I shouted to them, before we vaulted over the bridge and Sam and I hung on to the supports. I glanced down at the rushing water below us and frowned - one wrong move and we'd be killed like Constance. I looked around but saw no signs of Dean.
"Dean!" Sam and I began shouting for our brother. We were relieved seeing him crawl out of the water. We climbed back up onto the bridge, glad to see the car was back to being immobile.

We headed to a nearby hotel and Dean used one of his fake credit cards to get us a hotel room for the night only for the guy to say someone with the same name was using this hotel. We headed into room ten, where Dad had been staying, and saw it deserted. Half a burger lay on the table and his suitcase was on the bed like he'd been packing it, maybe to return home from the hunt. There was salt on the floor by the door and on the windowsill, suggesting to us that Dad was hunting the ghost - I knew the salt meant it couldn't enter his room.
"I don't think he's been here for a couple of days at least." Dean told his siblings, having smelt the burger.
"So where did he go?" I wondered.
"Salt, cats-eye shells… He was worried." Sam was beginning to really worry about their father at this point. "Trying to keep something from coming in."
"The ghost, Constance?" I suggested. Dean shook his head.
"No, I don't think she leaves the highway and bridge areas." he frowned thoughtfully seeing a pinboard with pictures of the ghost's victims on. "I don't get it. Their different men, different jobs, different ages, ethnicities… Why would she kill them?"
"Well there's always a connection." I began reading the pinboard herself trying to find the connection - could they be friends?

We eventually worked out that it was Constance we were looking for. We couldn't see in the article where she was buried so we decided to find her husband, Joseph, and see what he knew. It was obvious Dad had done the same thing so maybe Joseph, her husband, would have seen Dad. Dean went to get cleaned up before we left, and Sammy and I found a photo of our family - Dad, Dean and I were sat on the car while Sammy sat in Dad's lap. I had my arm around Dean's neck in the picture. I smiled remembering that day.

Dean headed out to a diner for food, Sammy didn't want anything but I asked him to bring me something back. I went on Sam's laptop to look for the address of Constance's husband while Sam was busy listening to voicemail's Jessica had left on his phone. I heard Sam answer a call and glanced up at him.
"What?" Sam asked into the phone. "What about you?" he stood up as he asked. I was confused but also worried about Dean, who must be the person on the other end of the call. Sam put the phone away, since Dean must have hung up, and went to the window. He quickly moved to the back of the room as I followed. We managed to get out before the cop could find us, but Dean wasn't so lucky - we heard he'd been arrested although they didn't know his real name or ours. We continued with the case, just Sammy and me. We went to speak with Joseph Welch about his deceased wife, knocking on his door. Sam looked around nervously, obviously thinking the cops were going to find us right now. I rolled my eyes at him, but didn't comment.

Joseph told us he'd seen our dad a few days ago. We found out Constance was buried behind Joseph's old home in Breckenridge. His children died in that house, so he moved away. By the time we left Joseph's place we knew where Constance was buried and that she was killing anyone unfaithful to their partner, because Joseph had been unfaithful to Constance. We headed to find her grave, to hopefully put her spirit to rest before anyone else got hurt.

I sat in the back seat of the car, even though Dean wasn't here and I could have sat in the passenger side I preferred watching the landscape pass as we drove towards Breckenridge to finish the job Dad started. Sammy was on the phone to Dean as he drove.
"Sammy, look out!" I shouted seeing a woman stood in the middle of the road. Sam was going too fast to notice, but instead of hitting her the woman disappeared when the car touched her. We were both confused seeing that, until we realised that must have been Constance. Sam quickly pulled the car to a stop, then we hear Constance's voice.
"Take me home." she ordered.
"Oh my god!" I gasped seeing her sat right next to me. She didn't even look my way when I spoke, just stared at the rear-view mirror.
"No." Sam told the ghost. That was when the doors locked and the car began moving on its own. The ghost drove us to her old home. "Don't do this." Sam pleaded with the ghost.
"There's always another way." I agreed with my baby brother.
"I can never go home." Constance told us. We realised the ghost was actually scared to go home, probably because this was where her children died. The place where she made the decision to kill herself rather than live with their deaths as Joseph did.

Constance then appeared in the passenger seat next to Sam. She pounced on my brother, pinning him to the driver's seat.
"Hold me." she demanded. "I'm so cold." she started moving closer to Sam, like she was going to kiss him.
"You can't kill me. I've never been unfaithful." Sam argued with the ghost.
"You will be. Just hold me." I really wanted to do something but I knew this was something Sam would have to deal with - it was like Constance wouldn't even see me, probably because she was going after unfaithful men like Joseph or the Troy kid. The next thing I knew, Constance was kissing Sam and he wasn't exactly struggling much. Constance disappeared suddenly, and Sam started screaming.
"Sam! What's wrong?" I leaned over to check on my brother, only to find him clutching his chest while he screamed.

We eventually got rid of Constance by taking her back into the house where her children died. The kids, a boy and a girl, took Constance with them to Hell or wherever they were going. We were just relieved to have solved the case, and I was glad my little brother was safe. We headed off to look for Dad, following a trail left in a journal Dean told us belonged to Dad. I was honestly worried about Dad at this point, surely by now he would have contacted us somehow?