PICK OF THE DAY

The Halcyon

9PM, ITV

As she adjusts to her new role as assistant manager and the responsibility that comes with it, Emma (Hermione Corfield, right) finds herself tested in this third episode. When a notoriously difficult guest arrives at The Halcyon, having already checked out of both The Dorchester and The Savoy, it soon becomes abundantly clear why he has changed hotel twice in eight days; but how should he be dealt with? And when a member of staff is found to have stolen valuables in his locker, Emma faces a moral dilemma – should she go with her head, or her heart?

An Island Parish: Anguilla

8.30PM, BBC2

We return to the Caribbean island of Anguilla, where the third episode of eight finds locals preparing for two very important birthdays, as the Queen turns 90, and ex-pat Margaret Jones reaches 100. Meanwhile, schoolchildren keep National Trust staff on their toes at Turtle Interaction Day.

Silent Witness

9PM, BBC1

When the body of a young woman, found floating in the River Lea, is identified as Lorna Katz, her death takes on a sinister significance when the team learn that her best friend disappeared in the same area, three years earlier. Is there a link? Owing to FA Cup football tomorrow, the story continues at 9pm on Wednesday.

Britain’s Ancient Capital: Secrets Of Orkney

9PM, BBC2

In the concluding episode, intrepid duo Chris Packham and Neil Oliver spend the night on an abandoned island, searching for clues about why cultures change. Plus, the technology behind a BronzeAge sauna is put to the test, and the archaeologists make a remarkable discovery.