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Disclaimer: I don't own the characters!

"It doesn't mean that Stella and Lindsay were the actual targets, maybe it was just unlucky that they were processing the bedrooms." Hawkes told Danny as they headed down the corridor towards Mac's office laden with CCTV tapes from the hotel and the surrounding area.

"Either way someone was at the crime scene meaning that evidence could have been contaminated so we have to inform Mac." Danny told him spotting Mac with Lindsay who was looking at something down a microscope.

"Hey Mac, can we talk to you for a minute?" Danny asked looking at Mac and then looking at Lindsay who was now watching them intently.

"Sure Danny, what do you need?" Mac questioned.

"Um, in private." Danny told him glancing at Lindsay who caught his eye and quickly returned to the sample under the microscope.

"Alright then." Mac said putting down the file he was holding and following Danny and Hawkes down the corridor to his office.

"What's this about?" Mac asked sitting down behind his desk as Hawkes put the CCTV tapes down and pulled a small evidence bag containing two flowers from his pocket and handed it to him.

"We were processing the room Danny and Lindsay originally processed and the bed was covered in those." Hawkes explained gesturing to the flowers. "Danny said that they weren't there before so we went down to the room you and Stella were processing and the bed was covered in the same flowers."

"So someone's contaminated the scene?"

"Well yes and no." Hawkes told him

"Go on."

"Well we went to the room that I had started processing and there were no flowers on the bed, everything was how I had left it."

"So you think the flowers are connected to Stella and Lindsay?"

"We know they are we just don't know whether they were the targets or they were just unlucky." Danny told him. "We talked to the fire officer in charge and he informed us that the carbon dioxide got into the rooms through a hole in the ceiling."

"I take it that you processed the rooms above 412 and 302?"

"Of course we did. It looks like the flowers were placed on the beds from the rooms above as well, we found some more forget-me-nots on the floor next to the hole which ran through to the bedrooms below."

"As far as we can tell the hole was covered by a light fitting." Hawkes informed him.

"It sounds planned to me." Mac said looking at the flowers which were still in the clear evidence bag.

"That's what we were thinking which means that those men were killed to lure Lindsay and Stella into those rooms." Danny replied.

"Not necessarily, maybe CSI was the target. How would the killer know that Stella and Lindsay would end up processing the bedrooms?"

"I suppose." Danny sighed. "But what about the forget-me-nots?"

"I'll start searching through our case files starting with cases Lindsay and Stella worked together. I take it you two were going to start searching through the CCTV footage?"

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"I got your page, what've you got?" Mac asked entering the lab.

"A possible suspect, he was hanging around the lobby when both Lindsay and Stella entered but disappears shortly afterwards and was one of the last people to leave when the building was evacuated, he left through the kitchens and into the alleyway." Hawkes told Mac playing him a low quality black and white video showing Stella, Mac and Flack walking through the lobby, a few metres away the suspect is watching them.

"What's he doing? Mac asked pointing to the man's hands.

"Cracking his knuckles, he does the same when Lindsay enters but not when me and Danny arrive shortly before." Hawkes told him fast-forwarding the tape to show him and Danny walking in chatting. As soon as they disappear from view Lindsay walks past talking to someone on her phone.

"Any idea who she's talking to?"

"No, we were long gone by then but in about thirty seconds Lindsay leaves the hotel and comes in again two minutes later with her kit in her hand." Danny told him as they continued to watch the tape.

"She looks distracted which might be the reason she left her kit in the car." Mac said as they watched Lindsay disappear off camera for the last time.

"The man's nowhere to be seen when you leave the building with Stella." Danny said playing the footage of Mac holding Stella's hand as the paramedics wheel her out of the hotel. "But just as Flack and Hawkes run up the stairs he leaves the hotel." He continued as Hawkes played footage of the stairs and footage of the alleyway side by side.

"Well the timings definitely fit, is there no other CCTV footage of him?" Mac asked.

"No, there are only cameras in the lobby, the stairs and the exits, he must have used the lift." Hawkes informed him.

"Good work you two, can you get me a print out of the suspect? I need to talk to Lindsay."

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"Lindsay have you got a minute?" Mac asked from the doorway of her office.

"Yeah sure." Lindsay replied scribbling something on a sheet of paper before putting her pen down.

"Do you recognise this man?" Mac asked handing Lindsay an image from the CCTV footage Danny and Hawkes had been looking through.

"No, I don't think I've seen him before." Lindsay told Mac giving him the picture back. "Who is he?"

"We don't know yet. We think he has something to do with the triple homicide at the hotel and you and Stella ending up in hospital." Mac told her.

"I thought the gas leak was an accident."

"So did we but we've found some evidence to suggest otherwise." Mac said pulling the evidence bag containing the forget-me-nots out of his pocket and giving it to her, watching her reaction closely.

"What are these Mac?" Lindsay asked not looking up at him.

Despite this Mac was certain that he saw her brows furrow slightly and possibly a look of recognition creep across her face.

"Myosotis sylvatica also known as forget-me-nots."

"I know that Mac, I meant where did you get them?" Lindsay asked looking up at him.

"They were scattered over the beds in the rooms that you and Stella were found in this morning." Mac explained searching her face for some kind of reaction again but if Lindsay did know anything her face wasn't giving her away."

"So that's why you think it wasn't an accident?"

"I think that it's safe to come to that conclusion, yes."

"It doesn't mean that Stella and I were the intended victims." Lindsay told him cringing slightly at the thought of her and Stella being victims.

"I didn't say you were, it's quite likely that the department as a whole was targeted."

"Do you want me to start looking through case files?" Lindsay asked in her usual eager voice.

"No Lindsay, I want you to go home and get some rest, Danny and Hawkes will fill you in on the details tomorrow."