Timothy gets distressing updates about his business, Chelsea connects with expat Chloe, and Gaitok shares his feelings with Mook.

Despite being on mandatory leave, Ralph continues to scrutinise the confounding circumstances surrounding the night of the murder. Jack has a hair-raising experience at a remote barn where key evidence and a mysterious substance have been found.

As Robin goes undercover, Barclay finds himself at risk, and Strike is pulled into Charlotte's messy divorce.

With the Pied Piper team fielding job offers and Russ distracted by financial news, Richard faces the prospect of either merging with a nemesis or folding. Elsewhere, Dinesh tries his hand at wooing a woman online.

When Richard takes pity on a competitor, he accidentally sparks a feud that finds him getting paranoid about security. Meanwhile, facing pressure from board members, Gavin looks to place responsibility elsewhere, and Jared exaggerates Pied Piper's size to get results.

Erlich wants to testify when Pied Piper and Hooli enter binding arbitration, but Richard worries that his rival's claims could have merit. Meanwhile, Jared, Dinesh and Gilfoyle debate a philosophical theory, and Big Head gets a boost.

As the guys await the verdict on Pied Piper's fate, an unexpected real-life drama draws a spike in traffic to their livestream and leaves them fighting to hold things together - literally. While Erlich considers his future, Richard scrambles to save Pied Piper's.

After being unceremoniously fired, an angry Richard faces a tough decision: accept the diminished role of CTO, or leave Pied Piper for good. At Hooli, Gavin tries to improve his image by admitting failure, and Big Head gets wind of major changes.

Pied Piper's new and improved offices and perks impress Dinesh and Gilfoyle, but Richard worries his vision has been compromised. Jared faces issues evicting renters from his condo. Erlich struggles to get rid of Jian-Yang. Gavin suggests a controversial move at Hooli.

Struggling to perform at a lesser level, the guys end up with a product that's more successful than they intended. Erlich discovers he's facing Hacker Hostel competition from a familiar face. Convinced of Pied Piper's threat, Gavin decides to double down on Nucleus.

Nervous about Laurie's next steps, Richard takes matters into his own hands, letting his ego get the better of him during an interview. Dinesh, Gilfoyle and Jared misplace an important piece of hardware. Erlich faces unexpected pushback pitching his plans to Big Head.

Richard finds himself in his element while leading a global staff of engineers but his budding relationship is threatened by his coding neuroses. Dinesh takes an interest in a foreign co-worker. Big Head and Erlich's launch party hits a snag, or two.

Larry tries to rid himself of an inept assistant, offends Jeff's barber and gets into hot water over a new project.

Larry reaches out to a familiar face, gives a hotel guest sartorial advice and looks to create a diversion to help a friend's nephew.

Larry turns to a writer for advice. While searching for Susie's missing "little sister", he gets ticketed by an overzealous cop.

Larry's therapist accuses him of overstepping; Susie grows suspicious of Jeff; Larry bribes an usher at a funeral.

Larry commits a faux pas with Sammi's fiance, and tries to start over with his mail carrier and golf club security guard.

Larry invents an ingenious ploy for getting his friends out of relationship jams; Larry upsets Funkhouser's new girlfriend.

Larry angers a hot-yoga teacher, has an auspicious first date, and seethes over a run-in with an unfair Uber driver.

Bridget asks Larry for a favour on behalf of her son. Larry earns unexpected gratitude in a buffet line, and realises that tips are better than favours.

Larry is blackmailed by an employee and tormented by someone from his past. Jeff and Larry pitch a new creative venture. Susie gets turned on by a surprising source.

Lyra and Will find allies who can help them in their search for Will's father. The Magisterium learn something shocking, and Mrs Coulter meets a formidable foe.

As all paths converge on Cittàgazze, the search for Will's father becomes more pressing. Jopari and Lee try to locate the knife bearer, but the Magisterium are in close pursuit. Ruta updates Serafina on Asriel's plans, while Mary consults the I Ching on her task.

As Will searches for Lyra across worlds, Mrs. Coulter tests an unlikely new ally, while Asriel recruits for his war against the Authority.

As the Magisterium closes in on Mrs. Coulter, Will tries to help Lyra to safety. Asriel's base is rocked by unexpected visitors.

Lyra and Will seek help to fix Will's knife. Mrs. Coulter causes chaos at Asriel's republic.

Carrie questions whether she's ready to take another step toward letting go. Charlotte boasts that she's finally finished menopause. Miranda's spontaneity backfires.

Two stars of a 1970's horror show talk to a podcaster about the origins of their cult TV programme.

As Emily's trial begins, Mason attempts to recover from a shaky start. Della and Strickland investigate a potential connection between Detective Ennis and Charlie's kidnappers. Later, Mason considers betraying Drake's trust to give his client an edge in court.

After months of travelling, Joel and Ellie receive a grave warning about what lies ahead. Later, Ellie learns more about Joel's past - while Joel tries his best to forget.

During her visit to Lawton Hall, Lister remains determined to draw a line in her tempestuous 20-year relationship with Mariana, who questions her connection with Miss Walker. Back at Shibden, Ann gets a surprise visit from an old friend sent by her meddling cousins.