When they arrived, a group of officers already stood in front of the house. Ever since they received these threats, they were extra careful. Bomb dogs were walking around every crime scene but fortunately never detected anything explosive.

Nick, Greg and Catherine got out of Nick's car, Ray and Sara got out of Sara's car.

They all went into the house where they already met the first two bodies. „Hi guys. The son and his girlfriend... The others are upstairs, the father is in the basement..." David said, leaning over the bodies.

Catherine sighed. "Okay. Ray, you take the father. Sara and I will take these two here. Nick and Greg, upstairs?"

"You got it" Nick picked his kit up off the floor and went up.

"The aunt found them and called 911..." David said, pointing at the crying woman standing outside.

Ray went down to the basement.

The father was hanging on a rope that was wrapped around some pipes, suggesting he hang himself after he shot his family.

Ray pointed his flash light on the rope around his neck "Bruising around the neck..." he let his flash light wander through the room. "And here's the gun he probably used to kill his family..." He thought, picking it up and bagging it.

Nick was standing in the door to one of the daughter's bedroom. The daughter, who wasn't much older than 10 years old, was lying on the floor with a teddy bear near her dead body. It was lying in a puddle of blood.

Greg walked over to Nick, looking into the room. He could see the shocked look on Nick's face. "Do you want me to process the bodies? You could take the rest of the house."

"No, I'm fine. We'll process the rooms together after we finished up the bodies. Who's in the other rooms?" Nick looked at Greg.

"The mum is in the bedroom, the second daughter in the bathroom... The shower was still on when I went in. How about I process the daughters and you take the mother?" Greg offered to Nick. Nick had always a hard time working on cases involving kids, but everyone of them did.

"No it's okay. Let's start with the daughters and whoever is finished quicker does the mother." Nick went into the room.

"Alright..." Greg said, making his way into the bathroom.

When Nick was done in the little girl's bedroom, he went into the room the mother was lying in. Much to his surprise, Greg already started processing the room.

"That was quick" Nick said, grinning at Greg.

"Yeah well, there wasn't much evidence left. The shower washed it all away." Greg said to Nick, picking up some fibers.

"The daughter in the shower, was she shot, too?" Nick asked, taking a look at the mother's face.

"Yeah, I think she didn't even saw him coming. It looks like she was shot in the back and didn't try to run."

"Hey guys" David walked in.

"Hey Superdave" Nick said, still looking at the mother's face, picking up some fibers from her mouth with his tweezers. „Can you tell me if she died from the gunshot wound?"

"Let's see" David looked at the wound "I'm not 100% sure, but it looks like she was shot after she died..."

Greg looked up to the two men. "If she wasn't shot, she might've been the first victim. The daughter in the shower probably was the second, that would explain why she didn't hear anything. The little girl was probably the next victim..." he paused. "And then he killed his son and the girlfriend who were trying to make a run for the door..."

"And then he killed himself in the basement" Nick added.

They looked at each other. "Okay, let's get them out of here, David." Nick finally said.

Nick and Greg were in the daughter's bedroom, the one that was shot in the shower. She was 15 years old, a pretty girl. Her room had posters of different bands and singers on the walls, and a few pictures of her friends. One of the boys on the pictures looked like he was her boyfriend.

"Greg, look at that." Nick pointed his flash light on the bed. "Does that look like semen stains to you?"

Greg gave Nick a look "Looks like a pretty fresh stain to me" he swabbed it. "You think this has anything to do with what happened?"

"Well, if this guy is her boyfriend, maybe." looking at his pictures, he said "He looks like he's at least two or three years older than her. Maybe the father found out and lost it."

"We'll have to find the boyfriend and talk to him" Greg said, putting the swab away.

They were going through the room, looking at every little detail, since they suspected that it all started with the daughter.

"Now that's nothing a father would like his 15 year old daughter to possess." Nick held up a pack of condoms and a pack of birth control pills when suddenly a bullet pierced through the pack of condoms, almost hitting Nick's hand.

"Get down!" Nick yelled, pushing Greg to the ground, who was standing just a few inches away from him. A few dozen bullets followed to pierce through the house, several of them through the room Nick and Greg were in, missing the two men by mere inches.

Then it stopped. Silence. Neither of the two men said anything. They couldn't hear anything from downstairs, either.

"What was that?" Greg said with a trembling voice, trying to get up.

"Wait" Nick pulled him down again. With his right hand on Greg's back, keeping him from getting up, he slowly took his cell phone with his left hand, giving Catherine a call. "Catherine... Are you guys alright?"

"Yeah, I think so... How about you?" Catherine replied.

"Still in shock..." Nick laughed a bit, almost as if he couldn't believe what just happened. "But we're fine. Have you checked on Ray yet?"

"He's here with us" Catherine stopped for a while.

"Catherine? Are you still here?"

"Call the paramedics!" was all Nick could hear through his phone anymore.

"Catherine? Catherine!" Nick got up "Someone's got hurt, I think..." briefly looking at Greg, he ran downstairs.

When both Nick and Greg arrived downstairs, the lobby looked like hell broke loose. Several bullets hit the bodies, lying on a gurney, ready to be wheeled out.

"Where's Catherine?" Nick said, looking around the room.

"Outside... Two o...officers were hit..." David stuttered.

As Nick went outside, Greg took care of David who was still shaking.

"Catherine!" He went over to her.

Officer Headley and Officer Jones were lying on the ground, bleeding. Catherine pushed against the gunshot wound Officer Headley had in her leg as the paramedics arrived. Catherine made room for them and went over to Nick. "She has a chance, but Officer Jones..." she shook her head. Officer Jones was shot in the head, he was dead instantly. "We need to make sure we're safe here. Until we know for sure, no one touches anything."

When they were allowed to go back in, they went back to work, almost as if nothing happened.

"Okay, Ray and Sara, you two try to get every evidence we need for the murders. Nick and Greg, you two come with me. We need to collect all the bullets we can find. When you two are done with the murders, you can join us. Start down here, we'll start upstairs."

"I can't believe you two came out of here without a scratch." Catherine said, taking pictures of the bullet holes in the walls. They were back in the room where Nick and Greg were standing when the shooting started.

"Yeah I know." Nick picked up the pack of condoms "We need to find this guy quick, before anyone else gets hurt."

Greg was sticking the laser pointers into some bullet holes "I think I know where the bullets came from!"

"From that tree?" Nick said in disbelief.

"Look closer. There's a tree house up there. I think the shooter was in that tree house!"

"I'll send a Unit." Catherine said, picking up her radio.