The team makes holiday plans while a seemingly straightforward murder investigation takes a shocking turn, putting the entire city of New York at stake.

With the threat of a nurse walkout, Alex is caught between her colleagues and Joyce. Ron and Bruce go above and beyond to help an unexpected patient.

The top six artists perform a contemporary and classic song in front of the coaches to compete for the title of The Voice. Viewers have the chance to vote for their favorite artist overnight.

As the circumstances surrounding the bureau worsen, Maggie, OA and the team make a sacrifice to protect the entire city of New York.

Watson's biohacker friend Hobie returns when he rushes his new girlfriend to the Holmes Clinic after they partake in a gene-editing experiment that goes wrong. Meanwhile, Watson becomes suspicious of Sherlock.

Jimmy welcomes actor Simu Liu, actor Jake Connelly, figure skater Alysa Liu, and comic Greg Warren.

Stephen welcomes actor Paul Rudd and actress Lesley Manville.

A mysterious new threat turns the Mutanimals against the Turtles, leading the boys to discover the source of this terrifying mutant... Staten Island

An undercover mission at a lavish gala strands Lara in enemy territory, forcing her to fight her way out before a high-security lockdown seals her doom.

A hidden motive - and fingerprint - in Lee Ki-dae's murder case leads to an unlikely source. Mo Eun orchestrates a plan after news of a kidnapping.

The discovery of another burned body at Parc G?ell confirms Milo and Rebeca's instincts. As pressure mounts, Mauricio's footage comes under scrutiny.

Tej realises he has the perfect candidate for the group to focus on.

Sandi Toksvig has a weird and wonderful episode of QI featuring Melanie Bracewell, Patrick Kielty, Roisin Conaty and Alan Davies.

James builds a sound-proof room-within-a-room to tackle noisy neighbours and attempts to fix local Piers' toaster. He also invents 'Cheese Chess'.