WARNING: This article may contain spoilers for The Rookie season 2 episode 17. Read at your own risk.

The Rookie season 2 episode 17 is coming later this week on ABC, with the title "Control." This episode might be all about relationships, especially for Officer John Nolan. But then, this relationship story doesn't involve his romantic life, but his professional life instead.

In The Rookie season 2 episode 17, Nolan will try to handle his relationship with an informant. These people are essential to cops' jobs since they are a big help in successfully completing a case and getting information on leads. They will help you, and then you'll also try to help them.

But, this would be different for Nolan and he'll be in a difficult situation. He recognized that the informant is a huge help for him, but he found out that she's back engaging in some criminal activities. This is a serious issue and he needs to deal with it.

According to the synopsis of The Rookie season 2 episode 17, Nolan's relationship with his first confidential informant is tested after he finds out she's back on the street dealing drugs. Although he knows she's a huge help, Nolan's informant could also jeopardize his career.

As for what else is coming in this episode, Lucy's fear of dating after her abduction and her intrusion into the relationship of Jack is starting to threaten their friendship. Right now, it's understandable that Lucy is afraid of dating, so the best thing she could do is to have patience.

She also needs to understand that it may take some time before her life goes back to normal; she's still dealing with trauma. Although Lucy is used to having tough lives and faced near-death situations, that doesn't mean she has no fears.

In another report, the ratings of The Rookie soar high after the American Idol crossover. Reportedly, the episode, titled "The Overnight," managed to generate a 0.8 rating in the 18-49 demographic and over 5.8 million viewers, which is the largest total audience for the series ever.

The crossover helps the series as it features the appearances of host Ryan Seacrest, as well as the judges. In addition, the cop drama series also airs right after the singing competition, adding more help. CarterMatt also noted that airing the series every Sunday might be beneficial as well.

The Rookie season 2 episode 17 airs on Sunday night, Apr. 12, on ABC.