A familiar foe comes to Jim's aid in the Darklands. Back in Arcadia, Toby's distracting new headgear picks up an important clue.
Beau leaves the boys hanging about the Peterson ranch. Rooster takes Jen on a date. Colt and Abby fight about their future.
Colt wants to buy Sam Peterson's ranch -- with or without his family's blessing. Colt and Heather have a heart-to-heart about their loss.
Beau ponders a lucrative business offer. Rooster runs afoul of the liquor board. Colt tries to make peace with Abby's dad.
Abby moves in with Colt and Beau when she learns she’s losing her job. Rooster and Jen the engineer bond over getting dumped.
A job opportunity in Denver threatens to drive a wedge between Colt and Abby. Maggie pushes back about the pipeline.
An excited Sarah and Duck take the Shallots to see the Ribbon Sisters perform with their family circus.
Sofia must decide the right school for her; James fears he may not be talented enough to make it as a knight.
In 1953, Army scientist Frank Olson takes a fatal plunge from a hotel window. In 1975, a bombshell report ties his death to a top-secret experiment.
The remaining all-stars head to the dining room to be greeted by Gordon and a camel, before diving into the infamous Blind Taste Test Challenge - during which they must decipher spices with the risk of being blasted by mashed potatoes and gravy. Later, during a special dinner service, the restaurant hosts a private charity event for the Leukemia & Lymphoma Society and Shane's Inspiration. Each team must prepare a five-course meal for the guests, including actress Mindy Sterling and actor David Koechner. Find out who gets cut after Chef Ramsay calls this the worst charity dinner service ever.
One trip to New York morphs into two when Frank suffers a setback on the way home. Decades later, an apprehensive Eric checks into room 1018A.
Thanks to Seymour Hersh, Eric finally learns the truth -- but at a maddening cost. In room 1018A, Frank faces off with two mysterious men.
The LAPD interrupts the team’s Christmas celebration to arrest Mac for terrorism when they find a body in a building destroyed by a bomb Mac built.
Amid a wave of media attention, the government races to placate the family. In New York, Frank visits a doctor known for his unconventional methods.
A hotel worker overhears a curious phone call the night of Frank's death. In 1994, a forensics expert exhumes the body to find compelling new clues.
Frank's growing concerns about Cold War activities raise alarm bells at the CIA. A frustrated Eric launches a last-ditch bid for closure.