Early the next morning, Casey called Antonio to see if he could come in to the 21st District and talk to him, but didn't go into details about what for. Antonio could tell something was wrong and told Matt he'd be waiting for him. Casey was mildly relieved that Antonio was at the front desk waiting for him and he didn't have to try going through Trudy Platt and explaining the situation to her first for clearance. They headed up to the bullpen and Casey noted it was empty.

"Where is everybody?" he asked.

"Big shooting this morning, somebody had to stay behind and take calls," Antonio answered and gestured towards his desk, "Have a seat. What's going on?"

"I'm not sure how to explain it," Casey admitted, "I don't know where to start, it all sounds crazy."

"Just start wherever you can," Antonio said as he sat down across from the fireman, "Eventually it should all come full circle."

Casey nodded uncertainly, and tried to think how to piece it together that it made sense, "There's this woman, that Kelly's with..."

Somehow it all came pouring out, not in any order, but Casey told Antonio everything, including his suspicions that Cathy Woods had been the one to slash his tires. With some reluctance and obvious discomfort he also told Antonio about the pictures she'd sent, and the obscene phone call in the middle of the night. To the best of his knowledge he left no stone unturned. He wasn't sure how long it took to explain everything, but by the time he finished he felt emotionally exhausted.

And Antonio sat across from him with an unreadable expression on his face, and Casey didn't like what it probably meant.

"I guess this is the part where I'm supposed to convince you that I'm not losing my mind," Casey said.

Dawson blinked, "No, I believe you, Matt."

Casey paused for a minute, and asked in disbelief, "Why?"

Antonio almost laughed. "Matt, anybody who's been a cop longer than 10 minutes eventually encounters somebody like this, and usually it doesn't stop at one. Granted I've never dealt with someone specifically like this woman you describe, but I've seen some that came pretty close."

"But why?" Casey asked. "What makes someone this way?"

"That's one for the experts, psychiatrists, FBI profilers maybe, me, I just lock them up," Antonio said, "when I have sufficient cause to."

"And you don't," Casey said grimly, feeling all hope dashed again.

"Not yet," Antonio answered, "everything you describe is bizarre, shocking, horrific, but nothing criminal, not that we can prove yet. We need to look into this woman's background, do you know where she works?"

He thought back to the conversations he'd had with Kelly, "A publishing company."

"You know which one?"

Casey slumped in his chair, "No."

"Didn't think so...that's okay," Antonio was quick to assure him, "We can find out. Next thing, would you let our tech guys look at your phone?"

"For what?" Casey asked. "I deleted the pictures."

"Nothing's ever deleted, Matt," Antonio said, "if it was ever there, we can find it, that's something I'm constantly having to stress to my kids, you can't ever hide anything."

"Too bad you can't get Kelly's phone, then we might really get some answers," Casey commented, "There can't be any way that he didn't get all the messages I sent him, but if he said they didn't come through, where are they?"

"And you haven't told Kelly about any of this?"

"I can't, Antonio, he wouldn't get it. Even if I didn't think Cathy was pulling the strings on all this, Kelly never sees anything he doesn't want to see, he won't listen to reason, he won't listen to facts, he gets defensive about why people are looking into something."

The cop got a grim expression on his face, "Casey, you can't leave him in the dark about this."

"I know...but there has to be a right time to tell him when he might actually listen, and this just isn't it," Casey responded.

"Matt, I can't stress this enough, you have to be be careful," Antonio said.

"I know."

"I don't think you do. I don't know why this woman's got you in her crosshairs, but she's not going to back off. Whatever you do, do not confront her. If she starts raising the stakes and there's a viable threat, you call me, call Voight, call somebody, do not be alone with this woman."

"No problem," Casey replied. "If I never see her again it'd be too soon."

Something Antonio had said stuck in Casey's mind and after leaving the 21st District, he went to the library and searched through the true crime section and found several books of criminal psychology and several by FBI criminal profilers. He grabbed them all, hoping that something somewhere could shed some light on what made a person like Cathy Woods the way she was and what to do with them. On his way to the front desk, he stopped when he passed the movie section, turning on his heel, he looked back at the DVD cases and one in particular stuck out.

'Fatal Attraction'.

Herrmann's words from the previous night replayed in his head.

"And I would definitely bring this to the cops' attention before she tries something like boiling a rabbit on your stove."

Casey set his books down on one of the reading tables and stepped over to the movie rack. It had been a good number of years since he'd seen the movie, but he was starting to think a refresher might not hurt. He took a step back and was ready to add it to his pile, when a few rows down on the shelf, another title caught his eye. 'Play Misty For Me'.

With few exceptions, Casey had seen every Clint Eastwood movie, including this one, but that also felt like a lifetime ago. Suddenly it felt in his best interest to watch it again. As he pulled that case off the rack, an unfamiliar title almost seemed to light up in neon in the row between the other two. 'Gaslight'.

He knew the term, everybody did, gaslighting was driving somebody crazy, but his only actual knowledge of the movie itself came from the finale of M*A*S*H, he vaguely recalled Hawkeye's ranting in the psyche ward.

"Charles Boyer was trying to drive Ingrid Bergman crazy in 'Gaslight'. "The light's going dim!" "No it's not, you're crazy!" Now, she knew she wasn't going crazy, the audience knew she wasn't going crazy and this FRENCH guy is trying to have her put away, now I'd like to know why!"

For some reason, Casey thought it would be a very good idea to check it out. He held the three DVDs in one hand, picked up his stack of books with the other and headed to the front to get checked out.

Casey felt exhausted. He'd spent the night reading a little in each of the books he'd picked up, but he spent six straight hours watching the movies he'd rented. 40 years between them, and nothing changed, crazy people were always crazy, and always oh so charismatic, and charming, and could make you doubt your own senses, even when it was obvious they were a straight-up loony, their public appearance would have everyone believing you were the nut if you tried calling them on it. Every time it all started so innocently enough, a chance meeting, and then...but he started to think, or tried to. Where and how had Kelly met Cathy? Just in a bar? Just by chance? Or had it been planned? Had she already set her sights on him before he even saw her? Or had she just been fishing for any guy that she could somehow just look at and know who she could sink her hooks into?

As bad as he already felt, it didn't do him any good to remember in a few hours he'd be on shift for 24 hours, and he still had to talk to Boden. He was too tired to go to bed so he just shut off the TV and curled up on the couch, and prayed for sleep though he doubted it would be peaceful or restful whatsoever.

Squad had been called out but Truck wasn't. Casey knew there wouldn't be any better time to speak to the chief, even so he found himself pacing and wringing his hands outside of Boden's office.

"Lieutenant Casey."

Matt was drawn out of his thoughts and saw Connie staring at him.

"Are you okay?" she asked.

"Uh...no," he answered honestly as he shook his head. "I need to speak to Boden, and...I'm not sure how I'm going to do it."

"Is this about that woman?" Connie asked as one eyebrow arched halfway up her forehead.

Casey looked at her with wide eyes of shock. "Uh...yeah, it is." He looked in the window and saw Boden was off the phone and decided it wasn't going to get any easier. "Wish me luck."

He knocked on the door before sticking his head in, "Chief, got a minute?"

"Sure, come on in."

Casey entered the office and closed the door behind him, making sure the bolt actually held so their conversation didn't drift out to the next room. "Uh...I need to talk to you about something."

Boden looked at Casey over the top of his reading glasses, "Okay?"

"It's about Severide's girlfriend," Casey said. "I know it's going to sound crazy, but...Chief, I think she's the one that poisoned everybody."

Boden's eyebrows raised slightly, "Excuse me?"

"I think she poisoned us," Casey said, "I think she's responsible for everything that's been going wrong the last few weeks."

"You lost me already, Matt," Boden said as he gestured for the lieutenant to sit down, "You want to back up and try that again?"

Casey sat down and balled up one hand in a fist and nervously hit it against the flat of his palm, "Cathy Woods, you've met her?"

"I've seen her briefly," Boden answered.

"Chief, a lot of strange things have been happening since Kelly met her...and I can't prove anything, but I just know she's responsible."

"Like what?"

"Somebody slashed the tires on my truck a while back, I think she did it," Casey said. "Severide's phone keeps calling me in the middle of the night and nobody's there...some of us went over to his place one night when she made dinner, and I was on the bathroom floor puking my guts up all night, by the next shift, everybody else was sick...he says he doesn't get my messages, my calls, he says he sent me messages that I didn't get...a few nights ago his phone called me, nobody talked, but I could hear them having sex...then she sent me a bunch of pictures...I mean X rated, Chief, she called Kelly and said she meant to send them to him instead, had him call me to delete them..." he shook his head, "I don't buy it. I've been around this woman more than I care to, and one thing I know, she doesn't do anything by accident...it's all very carefully planned, and because of that, I can't get Kelly to see what she's doing, and I can't get him to believe me."

"I have to admit I'm having a little trouble there myself," Boden said.

Casey felt like he was going to burst into tears. Of all people not to believe him, "Chief-"

"I'm not saying I don't believe you, Casey," Wallace raised a hand to get his attention, "but this isn't making any sense."

"Tell me about it," Casey replied.

"Matt..."

A knock at the door interrupted them, Connie stepped in and said bluntly, "Chief, a minute."

Boden knew better than to argue with his secretary. "What is it, Connie?"

She looked at the battalion chief and said, short and to the point, "That-bitch-is-crazy."

Now Casey's eyebrows moved up his forehead, as did Boden's at Connie's little bombshell.

"Oh-kay," Boden said, recovering from his shock, he cleared his throat and asked Casey, "Have you talked to the police about this?"

"I talked to Antonio," Casey said, "He advised not being alone with Cathy. Since she's been showing herself in around here, I thought I better bring it to your attention incase anything else would start happening."

"And you haven't brought Kelly in on this?"

"Chief, I can't, he's so blind in love with her," Casey said, "He said he hasn't felt this way since Renee."

Boden inhaled and leaned back in his chair.

"He's not going to see what's happening and you know it," Matt said, "That's why this is so hard."

Wallace nodded, "No argument there. Alright, I'll put the word out to the men to keep their eyes open and not to mention anything to Severide, for the time being. If you're right and things start getting worse, it's going to have to come to his attention whether he wants to face it or not. In the meantime, nobody's to be alone with her if she gets foot in 51 again."

Casey nodded, but he wasn't sure he felt any better about the situation. He'd done what he had to, what Otis and Herrmann both agreed he should do, he brought Boden and the cops in on it, even though there still wasn't any proof of what was going on, there wasn't any way to prove anything Cathy had done. So now everybody knew to be on the lookout...but now what?