“Castle” Season 6 dives into a world of shadowy warriors, geishas and karaoke in the upcoming episode, “Way of the Ninja.” In a preview video, Castle, Esposito and Ryan visit what appears to be a Japanese-fetish bar to question geishas about a murder.

The result? Castle (Nathan Fillion) ends up alone with an informative young woman (Arden Cho, “Teen Wolf”) and learns a few surprising things about Jade, the victim. He also gets some kissing and then apparently an attack from management. Meanwhile, Esposito (Jon Huertas) mostly looks lost while poor Ryan (Seamus Dever) gets dragged off to sing “What I Like About You” (badly) at karaoke.

What does any of this have to do with the case? When do the ninjas show up? The audience will find out when “Way of the Ninja” airs Monday, March 17 at 10 p.m. ET/PT on ABC.

Posted by:Laurel Brown