The Undoing continues to reveal its dark underbelly, Amy Huberman goes Lodging with Lucy, there's a new celeb reality show called Don't Rock the Boat, and a Panorama special asks: Is TikTok Safe?

Pick of the Day

The Undoing, 9.00pm, Sky Atlantic

Following on from last week’s engrossing opener of this David E Kelley drama (which is basically the Gossip Girl gang all grown up), Nicole Kidman's Grace struggles to reach husband Jonathan (Hugh Grant), and she finds herself on the receiving end of detectives Mendoza and O’Rourke’s questions.

It’s all as a result of the violent death of a mother of a student at their son’s private school they’re investigating. Is her husband’s otherwise inexplicable disappearance linked to the murder?

Nothing makes any sense, as a clearly rattled Grace is sent reeling through a maze of shocks - and then the NYPD turns hostile.

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Don't Miss

Lodging with Lucy, 9.00pm, Virgin Media One

Lucy Kennedy is joined for lunch by actress Amy Huberman (below), who discusses preparing for the birth of her third baby, and receives a surprise visit from her pal, Norma Sheahan.

If there’s one thing you can guarantee, it’s that Lucy and Amy will get along together famously. So you can expect more smiles than sparks in this week's episode.

Who Do You Think You Are? 9.00pm, BBC One

Silent Witness star Liz Carr (below) gets forensic about her family history.

She investigates a rumour that an ancestor was involved in some sort of assault, discovering that her paternal great-great-great-grandfather was involved in the attempted murder of a prominent landlord in Ireland in the 1850s.

In Search of Dracula With Mark Gatiss, 9.00pm, BBC Four

This was on before, but it should fascinate minor and major fans of oul’ fang face.

This documentary explores and celebrates the icon of popular culture, asking just why we keep coming back to the count.

From Orava Castle in Slovakia, the location used in the classic vampire film Nosferatu, Mark Gatiss journeys to the London Library on the trail of Bram Stoker's newly discovered research literature.

Pen15, 9.00pm, Sky Comedy & NOW TV

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Season two of this squirmy teen comedy continues.

Maura hosts a group sleepover at her house. The clock chimes late into the night as secrets and masks threaten the death of friendships.

New or Returning Shows

Don't Rock the Boat, 9.00pm, Virgin Media One

This brand new series is basically I’m a Celebrity . . . on a pair of rowing boats instead of in an Australian jungle camp.

Freddie Flintoff and AJ Odudu present as 12 celebrities of various shades set out to row the entire length of Britain, with the two teams of six battling it out over more than 500 miles.

In the first instalment, Tom Watson, Denise Lewis, Jodie Kidd, Craig Charles, Fleur East, Joe Weller, Jack Fincham, Lucy Fallon, Victoria Pendleton, Shaun Wallace, Adam Thomas and Kimberly Wyatt are split into two crews before facing their first epic leg at sea.

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Is TikTok Safe? - Panorama, 8.30pm, BBC One

TikTok has been the social media sensation of lockdown.

An app that provided a bit of fun for people stuck indoors, it now has hundreds of millions of users and teens across the world spend hours on the app every day.

On the face of it, TikTok doesn’t take itself too seriously, with users singing, dancing and chatting about everything from food to fashion, pranks to pets.

But is TikTok safe for the millions of young people who have signed up? Reporter Tina Daheley investigates.

Deliveroo: Secrets of Your Takeaway, 10.00pm, Channel 4

The behind-the-scenes story of how Britain's fastest-growing food delivery company - Deliveroo - has revolutionised the takeaway industry and how they are navigating these pandemic times.

With exclusive access to Deliveroo, cameras follow the teams of programmers, app developers and salespeople as they manage a network of restaurants and delivery riders that have transformed the takeaway experience.

Baskets, 11.00pm, Fox

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The slightly unsettling dramedy about an aspirant clown, starring Zach Galifianakis as twin brothers Chip Baskets and Dale Everett Baskets, returns for a fourth season.

First up, Christine and Ken have bought a new house, Dale has taken a sabbatical from work and Martha has a new life coach.

Later, in episode two at 11.30pm, Chip looks for a place to live.

Ending Today

The Bridge, 9.00pm, Channel 4

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The final episode of the reality series opens with a nasty shock for the group, as they wake up to discover that former teammate Luke has trashed the bridge build and sabotaged their progress in exchange for a pile of cash from the prize fund.

Zac finds it hard to believe that his best mate would do such a thing and considers throwing in the towel, while newly-elected leader Rowan is in the firing line.

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