Aaron Kaufman is back, and this time, he’s the boss. Redefining the custom car building space, he’s pushing his design abilities to the limits and focusing on vehicle builds driven by passion. Taking on concepts and builds he’s always dreamed of.
As the Monkeys and guest builder Big Mike race to get their '75 Datsun 280Z ready, a missing part may stop Richard from debuting Gas Monkey's first-ever tuner car at SEMA.
Dr. Shaun Murphy questions the need for an elective surgery that will allow his young patient to smile for the first time. Meanwhile, Dr. Claire Brown and Dr. Morgan Reznick discover that their patient lied about her identity.
Beth comes home to a surprise guest and is forced to confess to Ruby and Annie that she asked Rio if they could continue working for him. Meanwhile, Beth throws Kenny an elaborate birthday party, which unexpectedly leads the women to offer Rio a business proposition. Ruby's employment at the diner is threatened by a disgruntled teenage customer and Greg gives Annie the benefit of the doubt when she comes up with a creative solution for dealing with some bullies from Sadie's school.
Stan begins to experience crippling separation anxiety, which affects his performance at work; Klaus builds a website and forces the rest of the family to participate.
Kevin Hoffs and his blue lorry are found abandoned in a lay by. Leann informs Marcella that the lorry had been there for 36 hours. After analysing Adam's phone records, the team become aware that Adam had contacted the KidsCall helpline. Marcella heads there to retrieve the records and Maya is helpful despite both women having Tim Williamson in common. From Adam's records they see that he'd admitted to being abused by his father but his father has alibis for many incidents surrounding the case.
Season Finale - An argument leads Murdoch to help a man looking for his missing wife, Crabtree contemplates his future with Nina and the Station House team works on a grisly murder.
Much to Bell's dismay, Nic and Conrad decide to admit a homeless Jane Doe, whom they suspect was dumped off by another hospital during Chastain's big Charity Ball. Elsewhere in the hospital, Devon and Irving care for a male escort who offers surprisingly good advice, Micah returns for a checkup and falls even harder for Mina, and Devon's parents are in town.
After the Galaxy One is hacked by the Infinity Guard, Gary has to harvest energy from a nearby star to reignite the engines; the radiation poisoning from the star sends Gary into a trance of painful memories; Gary and Quinn are finally reunited.
Liv and Clive discover the murder they are investigating was the work of a serial killer. Meanwhile, Major enters dangerous territory.
As Chloe and Lucifer go on the hunt for a serial killer targeting couples in love, Pierce realizes the case is connected to a murder he previously solved...in 1958. Then, Lucifer becomes upset when Pierce has a change of heart about an important decision.
Jax blindsides Brittany with the news that he is considering moving to Florida for a job. Sandoval and Schwartz impress Lisa by creating innovative cocktails for TomTom. Stassi and Lala take Jax to task for always putting his needs above Brittany's.
Kyle and Amanda’s relationship feels the strain of existing in the house while Lindsay attempts to get her single summer back on track and Lauren moves on from Carl with a few new prospects. Back from Alabama, Stephen is ready to take his fling more seriously but struggles with mixed signals and Carl asks for permission to let a new love interest spend the night.
Rachel is forced to come clean to Serena. Quinn approves Jay's idea for a new show, but must make a potentially dangerous deal with one of the contestants. Rachel revisits a trauma from her dark past and uncovers distressing news.
When Mallus' power over Sara resurfaces, she unwittingly becomes the bearer of one of the Totems. Rory must conquer his dark side in order to wield his own Totem power to help save the crew. Meanwhile, Agent Sharpe notices that something is wrong and recruits someone unorthodox to help.
Logan's girlfriend Samantha has been kidnapped by an Abacus spy. Desperate for her return he looks to Ruth for help but she refuses to fund the mission and has her own agenda - getting her hands on the "Antelope's Tail". In defiance Action Team turn rogue to get Samantha back. Logan and Graham head to Montenegro to track her down, but it seems someone has tipped off the kidnapper.
Smashed tracks and century-old bridges challenge crews as they haul a crucial 152-car payload of coal across the mountains.