The previous teasers had just shown lettering, but the third teaser right above features the leads! Seo In Guk's character wonders, "Is she still alive?" and Jang Na Ra's character thinks, "It's him. I've waited so long for this."
The two characters fall in love once they start working on cases together, as Seo In Guk is a criminal profiler and Jang Na Ra is a detective. But it looks like they've known each other since childhood too!
The drama premieres June 22 so be sure to check it out! And don't the two have great chemistry even in their poster?