In Okinawa, Daniel spends time with an old friend - and an old enemy, who has much to teach him. The dueling dojos' rivalry comes to a nasty head.

On the third anniversary of Charlie and Rex's partnership, Charlie recounts how a high-stakes kidnapping brought the duo together on their first case.

Zoey returns to the world after an extended time away and discovers that a lot has changed at work and in her personal life in her absence.

Kate confronts her past. Randall's brush with viral fame leads to an unexpected discovery. Kevin debates the best path for his future.

Further excavation uncovers more evidence that the stone structure in the swamp could be a roadway, and analysis of the serpent mound has it dating back to the Templars, suggesting it may be one of the most important features discovered in North America.

Coming Soon...

Mark and Digger attempt oatmeal raisin shine for a high-flying Nashville customer; Mike and Jerry find themselves under the gun when they over deliver on proof to a biker gang; Mark and Huck forge a lifeline to old-time shiners deep in the mountains.

Lovesmitten Will has been sending money to a cosplay cutie in Thailand. With Will eying a move around the globe for a virtual stranger, Nev and Kamie are brought in to uncover the veiled reality behind Will's costumed love!

Jimmy shares some of his favorite Tonight Show fan-submitted screenshots in a new Screengrabs and then chats with Gwen Stefani and Ralph Macchio before enjoying a musical performance from Stefani.

Stephen welcomes author Dr. Sanjay Gupta and actress Anya Taylor-Joy.

As Sabrina longs for a piece of her past, vengeful visitors return to Greendale. The Fright Club competes in a life-or-death battle of the bands.

The silly putty of the English language, our most malleable swear word can refer to sex, rage, confusion, excitement and a whole lot more.

James welcomes actor James Marsden and a musical performance by Tim Minchin.

Justin plans to restore a neo-Gothic cemetery keeper's lodge and convert its toilet block into a luxury extension complete with a moat and swimming pool. But can he keep his budget under control?