TV tonight: Roz’s excuses land her in deep water

In too deep: Sinead Keenan as Roz Toovey. Photograph: ITV

Deep Water
9pm, ITV

There are bad marriages and then there are the marriages in Deep Water. This is where wives think nothing of staging a serious crime just to keep their hubby on his toes, infidelity is the nightly norm and spy cams are secreted in every exquisitely designed breakfast nook. Only Det Joanne Aspinall (Faye Marsay) seems to have her head screwed on straight: she is not buying Kate’s story about Lucinda’s disappearance and she sees straight through Roz’s excuses, too, in the penultimate episode of the series. Ellen E Jones

Grand Designs
9pm, Channel 4

Grand Designs: Kevin McCloud with Paul and Amy Wilkinson. Photograph: Tony Buckingham/UNP

No matter how many times Kevin McCloud raises an eyebrow in the face of an ambitious plan, Grand Designs never gets tired. This week, workaholic Paul has a year to build a massive new home made up of five circular buildings, but when the project inevitably goes over budget and schedule, the hell begins. Hannah Verdier

Raiders of the Lost Past With Janina Ramirez
9pm, BBC Four

The enthralling series about archaeological finds at the outset of the second world war continues with Lion Man, the prehistoric sculpture unearthed in a German cave in 1939. As fascinating as the object is the backdrop to its discovery, as Hitler sought to use archaeology to his own ideological ends. Gwilym Mumford

The Man Who Shot New York
9pm, Sky Arts

It was only in the final decades of his life, and after embracing digital methods, that photographer Harold Feinstein found commercial success. This feature-length documentary is filled with his joyous black-and-white images of Coney Island, as well as expressive footage of the man himself before he died in 2015. Ammar Kalia

Gordon Ramsay: Uncharted
9pm, National Geographic

“Are you trying to kill me?!” Ramsay continues his vertiginous journey to bag himself some indigenous cuisine. This week, he is trekking through Peru’s Sacred Valley of the Incas with local chef Virgilio Martínez Véliz (“Basically a younger, better-looking version of me. Damn him”). Ali Catterall

Better Things
10pm, BBC Two

Somehow managing to be both astringent and utterly charming, Pamela Adlon’s sitcom is an underrated comic gem. Its penultimate episode sees Sam and the kids visit her British aunt and uncle in Canada, a trip that sees the unearthing of a troubling family secret and a guest appearance from, of all people, Nigel Havers. GM

Film choice

Host with the most: Saoirse Ronan as Melanie Stryder. Photograph: Sportsphoto Ltd/Allstar

The Host (Andrew Niccol, 2013), 1.50am, Channel 4
The monsters lurk inside in Andrew Niccol’s feisty adaptation of Stephenie “Twilight” Meyer’s bodysnatcher story, set in a futureworld where people are overtaken by insidious alien parasites. Saoirse Ronan struggles gamely as teenager Melanie, locked in a battle of wills with her inner alien. Paul Howlett