There were a lot of echoes on Chicago PD Season 1 Episode 15, as viewers were taken back to the series premiere.

Voight took a man he doesn't trust for a ride, one of their own was taken from them and another new member took up a desk in the intelligence unit. 

Watch Chicago PD Season 1 Episode 15 Online

Dawson's first day back on the job had him enjoying the comfort of a desk - much to his chagrin - and while he's not a big fan of it, the same can't be said for his wife.

At the end of the day, when Dawson comes home, he finds that his family isn't there. It would be a pretty difficult scene if not for the letter he's left because others are all wondering whether the family is caught up with Pulpo against their will.  

Coincidentally, Nadia is coming out of rehab and Dawson does Lindsay a favor by picking her up. He later mentions that they have the budget for a civilian secretary and Nadia helps the unit out with a case. Call me crazy, but Nadia might be the best person for the job.

Voight needs someone he trusts and Nadia is incredibly loyal. There's no way she's going to spill anything after all that Lindsay has done for her. 

Lindsay's own troubles with Charlie continue, as some of her past finally comes to light: she helped cover up a murder. It's unfortunate that Lindsay is always attempting to do things on her own instead of relying on those in the unit.

Voight would do anything for her - and so would Halstead at this point. Voight, in essence, allows Charlie to stay in the city when he cleans up his act, making his confession. Spend a year in prison, grow up, find himself and then he's free sailing for as long as he wants to. Not a bad exchange when the alternative is Voight. 

Atwater's first day on the job rubbed me the wrong way quite honestly. He didn't show much enthusiasm when Olinksy asked about Burgess, nor did he really keep his head down and work with the rest of the unit. He wants to prove that he's an asset, I get that. But there's a time and place to do so and he seems to want to run before he can walk. 

However, the biggest issue I have with Atwater is one that is not his own: he's not been developed as well as I would've liked. We know very little about him, but we're on the complete opposite side for Burgess. His subsequent joining of the Unit would be easier to take if we had a similar understanding about him. 

At least Burgess isn't letting the promotion get her down. She's more determined now than she was, not putting up with anyone's crap - even on the job. It's a moment of bonding between Burgess and Platt when she asks for a better partner and Platt actually understands where she's coming from instead of being hard on her.

Platt is rather impressed that Burgess didn't crumble after being passed over.  

Best of all, though, was Burgess' kiss with Ruzek. They hold nothing back and the shipper in me is going wild because of it. 

The biggest development centers around Jin, a character who I've felt has done nothing all season. The way he was acting this installment made it pretty clear that something was going to take place with him and when he's lying face down on the ground with a shot to the neck, there was no real surprise.

Unfortunately, Jin will not be missed by me, as he was never really used. Jin, ultimately, knew who was coming after him: he saves a lot of information to a flash drive and puts it in an envelope and he calls he father to make sure to get out of Chicago. 

The closing scene wants to make us think Voight is the one who murdered him, but I'm not so sure that's the case. The man goes to great lengths to make sure the people in his unit are safe and sound. He's not going to shoot one of them, even if they do break his trust. Voight would much rather drive them out of the city. 

Did Voight kill Jin?