Castle season 7, episode 4 airs tonight. Check out the promo images, watch a couple of clips from last week’s episode, and read the synopsis ahead of the episode here!

Need a reminder of what happened on Castle last week? Check out our Castle season 7, episode 3 recap here.

Hot off last week’s excellently comedic “Clear & Present Danger”, Castle is looking for another hit and based on the previews, it should be!

The official synopsis for Castle episode 4 is: “When an ice cream vender is shot, evidence leads Beckett and Castle to believe that an unknown second-grader may have vital information about the case. Castle goes undercover at an elementary school to try and identify the second-grader but nothing goes as planned.”

How Castle convinces Beckett to let him go undercover remains to be seen, as does her involvement with the kids. Will Kate indulge in some Castle-like play with the kids too?

The following clip perfectly captures Castle’s child-like demeanor while also trying to find out which student might be at risk for witnessing a murder. Watch below:

Based on the clip and the pictures below, fans are likely to enjoy tonight’s episode. But what will Kate have to do in this story? Will she get any playtime with the kids, or does she leave that all to Rick? Kate had mentioned wanting kids with Castle eventually so this is a perfect time for her to get some experience.

Check out the images again to see if there are any more clues.

Watch ‘Castle’ online

If you’re unable to watch the episode live, ABC offers full episodes of Castle on its official website. However, they typically aren’t up for several days.

Check back later tonight for the full recap of tonight’s episode of Castle!