The Great Interior Design Challenge (BBC2, 7pm)

THOSE of us still shuddering at what Changing Rooms became on the Beeb will always struggle with the re-invention of a format where wannabe designers are challenged to source materials and products and then design areas of a home staying within a tight budget... in this case they've got four days and £4,000.

Fortunately, the home owner isn’t the person passing (and often suffering) the final verdict. Presenter Tom Dyckoff unleashes the award-winning architect and interior designer Daniel Hopwood and interior designer and former editor of BBC Good Homes Sophie Robinson on the projects.

Dyckoff says: "The first series of The Great Interior Design Challenge showed just how hard real interior design can be, and just how talented our amateur designers were. We had a great viewer response to the show, so we're all extremely excited to be let loose on the country's homes once again to discover those designer diamonds in the rough."

Hopwood adds: "It was about time that there was a decent interior design series on TV and the Design Challenge is it. A joy to make, there was so much to learn from the amateur designers even for me."

The view of Robinson is: "Interior design is one if the best ways to improve the enjoyment of your home and the last series showed that we have an abundance of talent and enthusiasm for this subject."

So far, there’s been 21st Century eco homes, awkwardly-shaped bedrooms and 1960s housing complexes re-designed, spruced up and overhauled.

Now, after 16 episodes, it's time to crown the winner. Tonight we see the two finalists go up against each other in a challenge which tasks them with re-designing a living room, a kitchen and a bedroom in Holme Eden Hall in Carlisle, a 19th Century stately home, now converted into individual apartments. The house has 365 panes of glass representing the days of the year, 52 chimneys represent the weeks, and the 12 corridors represent the months.

The Missing (BBC1, 9pm)

THE drama about a couple's missing five-year-old, sees James Nesbitt’s Tony desperately trying to cover his tracks in 2006, as he deals with the consequences of his actions and the lack of progress, while Emily (Frances O'Connor) finally breaks down when she realises that there are no real leads in finding Oliver, and Julien (Tcheky Karyo) is in danger following an unprovoked attack.

In the present day, Tony and Julien finally catch up with the man they've been looking for. He promises to stump up the information they need - but it's going to come at a price, so Tony is forced to go cap in hand to Emily, begging for her help.

Autopsy: The Last Hours of Elvis Presley (Channel 5, 9pm)

FORENSIC pathologist Dr Richard Shepherd is now famous for his in-depth televised autopsies in which he analyses the untimely deaths of famous folk notorious for their often self-inflicted ill health. Tonight, he’s focusing on "King of Rock and Roll" Elvis and the facts surrounding the 42-year-old singer's demise at his Memphis home, Graceland, in August 1977, using accounts from his best friend, his cousin and his private nurse, as well as considering all the medical facts.

The programme reveals that the post-mortem report showed that towards the end of his life, nearly all of Presley's vital organs were almost double the size they should have been, and what's more, his system was full of prescription drugs.