Forensics: The Real CSI
9pm, BBC Two
The series following the intricate science of crime-scene forensics returns for a second season. We open on a shocking murder case in an affluent suburb of Birmingham, where a man calls the police and admits to having killed his wife. In custody, however, he changes his story – and it is up to the forensics officer Jo Ward to lead the search for clues. Meanwhile, the digital forensics analysts manage to crack the suspect’s mobile phone and find key evidence for his potential motives. Ammar Kalia
South Africa With Gregg Wallace
7.30pm, ITV
Far from the buttery biscuit bases of MasterChef, Gregg Wallace rounds off his travelogue series. This week, he takes a helicopter trip from Durban to the Zulu kingdom in the Garden Province, where it is not long before a home-cooked lunch is calling his name. Hannah J Davies
Interior Design Masters With Alan Carr
8pm, BBC Two
After a challenging first week designing show homes, the remaining nine designers are split into teams and sent to west London to transform an office space. Tempers flare when the teams realise how much work they must undertake, as well as navigating their outsized ideas. AK
Roswell: The First Witness
9pm, Sky History
Was an alien invasion of New Mexico covered up by “the man” in 1947, or is the official explanation (a crashed surveillance balloon) closer to the truth? In a series that will – somehow –continue for six episodes, new evidence and the latest technological devices are used to reopen the case. Jack Seale
First Dates: Valentine’s
10pm, Channel 4
Lockdown may be scuppering most romantic plans, but that won’t stop Fred Sirieix and his team from putting on a Valentine’s Day extravaganza for their daters. Retired politician Roger, 71, is looking for a travelling companion, while delivery driver Adam stumbles through his date with Charlie. AK
Imagine: We’ll Be Back?
10.45pm, BBC One
This special explores how British performing arts companies have coped with enforced stasis in the past year. It is a sobering portrait of a cultural ecosystem in peril that also celebrates some ingenious stagings, from English National Opera’s drive-in La Bohème to beachfront standup in Brighton. Graeme Virtue
Film choice
Winchester ’73 (Anthony Mann, 1950), 4.40pm, Film4
Mann’s first of five collaborations with James Stewart is part revenge drama – with Stewart hunting down the men who killed his father (Stephen McNally and sneering sidekick Dan Duryea) – and part picaresque journey through the west, following the progress of a stolen Winchester ’73 rifle. Paul Howlett
Live sport
Australian Open tennis 8am, Eurosport 1. More first-round matches from Melbourne Park.
FA Cup football 7pm, BBC One. A buoyant West Ham travel to Old Trafford to face Manchester United in the fifth round.
Ice hockey: New Jersey Devils v Pittsburgh Pirates 11pm, Premier Sports 1. NHL action from Newark.
