Esposito reached for the doorknob and Ryan grabbed his arm.

"Let me in there" He begged Beckett and she shook her head.

"You know I can't if you go storming in there demanding information we might lose him I don't have anything as of right now to prove he did anything"

"Beckett...that bomb...it was for Lanie" Esposito looked ready to kill.

"Probably but I promise we will get him" She put a hand on his shoulder then turned to Castle who had remained silent.

"Castle I want you to stay with them" She nodded at Ryan and Esposito and he nodded.

She opened the door and went inside the three men went into the side room to watch through the mirror.

Ryan and Castle watched with interest while Esposito paced back and forth and kept glaring at the man who had tried to kill the only woman he would ever love.

"Hey, Beckett will get him it's alright" Castle tried to encourage and Esposito nodded.

Michael Hayes was tall and not really a bad looking man with blonde hair and ice blue eyes. He sat quietly at the table. Kate felt bad for him his wife of three years was pregnant with their first child when she passed away in her sleep. He had been away on business that night and the cop on duty said he was torn apart and kept insisting someone had killed her she was so young. After the first autopsy he kept asking for more but all reached the same conclusion.

The cop who had brought him in said that his current apartment was like a shrine. Pictures of his wife were everywhere and her clothes and personal affects were set out as if she still lived the man was obviously troubled.

"Mr. Hayes...Do you know why you're here?" Kate asked and he nodded when he sopke he had a very soft voice.

"That doctor died...The one who did my wifes autopsy"

"Not just one Mr. Hayes all of them" He simply shook his head.

"No" He said softly and Kate looked at him.

"Excuse me?"

"I've read the obituaries that woman...Dr. Parish...she's alive"

Esposito lost it he shoved himself away from where he was leaning on the wall and started for the door Ryan tried to grabbed his arm and he began cursing. Kate could hear the commotion and she could tell by Mr. Hayes expression he could too.

"What's that?" He asked seeming a little worried.

"That is a person who cares very deeply about the woman you referred too" He shrugged.

"Hey, I didn't hurt anyone"

"So, You didn't kill five medical examiners and attempt to kill a sixth?" He didn't looked shocked when he replied.

"No, I never killed anyone...maybe it was natural causes"

"Like your wife?" He looked hurt at the mention of his wife.

"Normal healthy twenty eight year old women don't just die" He stated and Kate glanced down at the report.

"She didn't just die...Something went wrong with her pregnancy while she was asleep Mr. Hayes"

"It still isn't natural" He sounded angry Kate remained quiet and he continued.

"The doctor said she was fine my baby was fine just two days before that...someone murdered them and you people didn't care"

"Mr. Hayes I'm very sorry for your loss but the fact is that five medical examiners are dead and one was injured and you're the only link"

"Maybe the same person who killed my wife killed your doctors" He suggested and Kate took what he gave.

"Well since pregnancy killed your wife I'd say it was you who did you're the one who got her pregnant. so...did you kill five people" He looked away then spoke.

"I want to leave" Kate turned and looked at the mirror and shook her head with a sigh.

"Fine you're not being charged yet...but Dr. Parish is in protective custody and we will find evidence against you" He stood and Kate did too opening the door she let him pass.

He came out of the room and Esposito was standing by the door with Ryan and Castle. Mr. Hayes looked at Esposito then at Lanie sitting at his desk he smiled and leaned in close so only Esposito could hear him.

"You better keep that pretty little M.E close with a psycho out there who knows what he might do to that pretty little body"

Esposito punched him knocking him back a step Kate yelled, Castle backed away and Ryan reached for him. He shoved Ryan off and Grabbed Hayes by his shirt front slamming him down onto a nearby desk.

"YOU STAY AWAY FROM HER! DO YOU HEAR ME! I WILL KILL YOU IF YOU EVEN LOOK AT HER!" He punched him again and was vaguely aware of Hayes yelling about police brutality.

Kate kept yelling and Ryan and Castle stepped up pulling him away but Esposito fought them and kept trying. Hayes got up his nose was bleeding definitely broken and he smiled at Beckett.

"You'll be hearing from my attorney" He said before walking away Esposito shrugged Ryan and Castle off of him.

"What were you thinking?" Kate demanded and he just looked at her.

Lanie was making her way towards him with a terrified and shocked look on her face he brushed past Kate, Ryan and Castle to go to Lanie when he reached her he turned to his friends.

"You better find some evidence on that guy because if he comes near her I will kill him" The tone of his voice was enough that they knew he meant it and Kate nodded.

"We'll find it" She promised he turned Lanie and they went towards the elevators.

"We have to catch that guy soon" Kate turned to Ryan and Castle.

"What are you going to do about Esposito?"Castle nodded towards the elevators.

"Well if we find evidence on this guy we'll rule it as a threat to an officer if not...I don't know" She turned to her desk and Ryan followed.

"Beckett, You can't fire him. He didn't mean it"

"I know that but he lost it back there, Did you see him?"

"He loves her, That jerk was begging for it besides you'd do that same for Castle" Ryan pointed at Castle and Kate sighed.

"Ryan, Just don't worry about it right now...we'll get him"

On the drive back to his place Esposito was unusually quiet and Lanie waited as long as she could stand before she spoke.

"Do you want to tell me what happened back there?" He looked over at her.

"No" She swallowed and took a deep breath.

"Was that him? the murderer?" He glanced her way.

"We think so"

"Why did he do it?" Esposito took a deep breath he didn't want to tell her about the other dead Medical Examiners or that the psycho was aiming for her with that bomb.

"I don't know" He sounded frustrated.

"Why did you do it?"

"Do what?"

"Oh come on. I've known you how long? I've never seen you lose your temper and I know I'm not a cop but even I know what police brutality means"

"HE COULD HAVE KILLED YOU!" He practically yelled and she shut up letting the whole thing drop.

Once they got back to his place he helped her up to the apartment and set her on the couch gave her a very gruff "I'll be back" and was gone.

She didn't know why he seemed so irritated and decided that now she was feeling better maybe it was time to try an pay up on her debt.