Castle and Beckett had dangerous run-ins with super-stealth ninjas on the latest episode of "Castle."

In "The Way of the Ninja," a young woman is walking through an abandoned warehouse when she is fatally stabbed by someone throwing a knife.

The victim is Jade Yamata, a Japanese citizen working for the New York ballet company. Her only connection in NYC is her boyfriend, Dean Bedford.

Castle (Nathan Fillion) and Beckett (Stana Katic) go the warehouse to investigate the murder. At the warehouse, they find a "murder shrine" with Japanese writing and a dagger that could be the murder weapon.

Then suddenly, a ninja steals the knife out of Castle's hands. He also creates fog, and disappears into the mist before Beckett can catch a glimpse of him.

The first suspect in the murder is Lee, a male dancer at the ballet company who is in love with Jade. But it turns out that he is Korean, not Japanese, and is not in love with Jade; Lee is simply frustrated by her lack of professionalism. He reveals to Beckett and Castle that Jade was going to leave the ballet company, even though it seemed like she wanted nothing more in life than to be a part of the company.

The team traces Jade's phone records to Miyago Tea Import Company, which they find to be in another abandoned warehouse.

But, it's not exactly abandoned. It turns out the warehouse has a Japanese hostess bar, where the hostesses practically prostitute themselves to get business. They discover that Jade must have worked at the bar because all of the women are wearing the same outfit Jade was wearing when she was killed.

Castle has a sexy rendezvous with a ninja, who tells him that Jade targeted a regular customer named Saito, and that she was at a party of his the night she died. Suddenly, ninjas attack again, with one trying to kill them while another saves their lives.

The team then visits Saito, who is involved with Japanese organized crime. They discover that a family was killed a decade ago in Japan for crossing the crime organization, and Jade is the same age as one of the children of the family, and is presumed to be dead.

It turns out a consulate officer, Saya, is Jade's sister. She tells Castle and Beckett that an operative called the Green Dragon was responsible for her family's death, and Jade wanted revenge. Jade had come to NYC to find the Green Dragon, and even dated her boyfriend to get information on Saito because her boyfriend's father, Randall, is connected to him.

Castle and Beckett get a warrant for Saito's arrest, but he claims he's not the Green Dragon. Just as he is about to reveal who the real Green Dragon is, the actual Green Dragon appears in ninja garb and tries to kill everyone.

Then the second ninja shows up again and saves them. The second ninja reveals that the Green Dragon is actually Randall, Dean's father, and the second ninja turns out to be Saya.

Beckett and Castle then take Randall off in handcuffs.

On the next episode, "The Greater Good," "Investigating the death of a Wall Street trader leads Castle and Beckett to discover that the victim was an undercover informant for the U.S. Attorney's office. To make matters worse, the U.S. attorney involved is Captain Gates' estranged sister."

Watch the promo below for "The Greater Good," which airs Monday, March 24 at 10 p.m. EST on ABC.