Mother Abagail selects a surprising voice to be her conduit to her chosen Committee in Boulder: the young deaf man Nick Andros. The arrival of a disturbing visitor to the Boulder Free Zone, shakes the Committee and Boulder residents to their core. Elsewhere in the Free Zone, Nadine Cross is haunted by a childhood memory.

After capturing the U.S.S. Discovery, Osyraa seeks a meeting with Admiral Vance while Burnham and the crew must overcome unimaginable odds as they attempt to regain command of their ship.

Tanis starts her own energy drink.

As an all-consuming darkness trickles into town, Sabrina grapples with feeling like the odd witch out - and makes a risky plan for a whirlwind trip.

Mercenary Transformers come upon the Ark adrift in space. As unlikely allies arrive to rescue the imprisoned Autobots, Megatron reveals Project Nemesis.

Dot sings about all the First Ladies.

Amid accusations of lies and betrayal, a rift forms between the newlyweds, while a deception of another kind could besmirch the Bridgerton family name.

The Highest suspects that Dikahn is with someone then finds out who it may be. Lilo disrupts the status quo at the compound in several ways. Ruth plans an escape while Brian sneakily tests Lynn for drugs.

A glimpse into the past reveals the true machinations of the Gods.

Astrid returns to her childhood home to look for clues. Ida's relationship with Jakob unfolds and his fascination with a mysterious book takes root.

The Doctor is imprisoned halfway across the universe. On Earth, the sighting of a Dalek alerts Ryan, Graham and Yaz. Can the return of Captain Jack Harkness help them stop a deadly Dalek takeover?

John Hannah, Krishnan Guru-Murthy, Nicola Coughlan, Rylan Clark-Neal and Shirley Ballas attempt a series of silly tasks, in a one-off festive special hosted by Greg Davies and Alex Horne.

Bangkok, 1975. Dutch diplomat Herman Knippenberg investigates the disappearance of a young couple who were last seen alive at the apartment of gem dealer Charles Sobhraj.