"So we've got both parents prints on the keys." Speed said.

"Which isn't unusual because they are both register users of both cars." Eric added.

"We have both sets of prints on the kid's seatbelt and the adults' seatbelts."

"Again not unusual."

"What about trace on their clothes?" Speed asked.

"There a few fibres which are consistent with the cars and each others clothing, but that could be transfer from a hug."

"So we still have no idea who set up the gas, there were no fingerprints on the exhaust, or the tubing."

"So we're no where." Eric sighed. "There has to be a way to prove who gassed whom."

"Did you find a sedative?" Speed asked.

"No. I've been over everything we collected from inside the house."

"What about an outside garbage can?" Speed questioned.

"We didn't collect it." Eric replied.

"Maybe we should go back to the house and take another look around." Speed stated.

"Has Alexx got the tox results back yet?" Eric asked.

"She has let me know, so I'm guessing no."

"So let go through this, someone knocked the little boy out and the other parent and put them in the car." Eric said.

"Then they connected the hose up through the window and started the engine, probably after taking a sedative themselves." Speed continued. "At some point the mother wakes up and sees what's going on. She switches off the engine and gets out of the car, comes around to the other side of the car and opens the door un-does the husband's seat belt and he falls out. She opens the back door and takes the boy out and tries to give him CPR but they are both dead. So she gets tries to go to get help, she goes through the door."

"She stumbles around, knocking things over, creating a mess and then grabs her car keys from beside the door and goes out the front door gets into her car and drives, but is dying from the carbon monoxide poisoning so pulls over and dies slumped over the steering wheel, where she is found by a passer by and we're called in." Eric concluded.

"Is it just me or do something seem to be missing from that story?" Speed asked.

"Motive." Eric replied. "From everyone PD talked to they were a happy well adjusted family, who were just settling in after the husband got a new job in Miami."

"No history of depression, mood swings?" Speed questioned.

"No."

"Let's go back over place again and grab the garbage can from outside." Speed said.

"What are you expecting to find?" Eric asked.

"An answer as to why this family died."

Speed's phone rang as he crawled around the garage looking for anything they had missed.

"Speedle." He answered.

"Timmy, it's Alexx. I've got the tox report back."

"What does it say?" He asked.

"They all died of carbon monoxide poisoning like we thought."

"Was there a sedative? Or are we on a wild goose chase."

"Chloroform." Alexx replied.

"We haven't found anything that would have chloroform on it, in the car or near by."

"The whole family had similar levels of chloroform in their systems and at these levels if either one of the parents had put a cloth over there mouth with it on they would have passed out within seconds, and a rag would have dropped right by their hand."

"Unless she took it with her and disposed of it."

"With the levels of carbon monoxide in her blood I'm surprised she even managed to start the car let alone drive anywhere."

"Are you saying someone else drove her and dumped her?" Speed questioned.

"It's possible, but in my opinion she couldn't driven half a block let alone a couple of miles."

"So we're looking at murder."

"I would say so baby." Alexx replied.

"Thanks Alexx."

"You're welcome baby." They hung up.

"Eric?" Speed called as he went to find him.

"What's up?"

"Alexx called me; she got the tox screen back."

"So what kind of sedative are we looking for?"

"Chloroform." Speed replied. "Alexx says they all had similar doses and that with the carbon monoxide levels in the mother's blood she wouldn't have been able to drive."

"So someone else drove her and put her in the driver's seat once she was dead?" Eric questioned.

"Looks that way. So I missed something in the cars and we need to find any evidence of chloroform."

"And now we're looking for a 'who' had motive as well."

"I hope you didn't have any plans for tonight."

"Other than going to see if I could see Calleigh no." Eric replied. "I want to get who ever did this too."

TBC