Family history hit Who Do You Think You Are? returns to BBC One tonight, delving into the ancestry of Josh Widdicombe.
Bake Off continues to pick up pace after the triumphs of bread week, this time concentrating on some delicious desserts at Channel 4.
Read more: What to watch on TV this autumn
The Owen family have another instalment for us from Our Yorkshire Farm on Channel 5, with further tough times ahead for them.
Meanwhile, BBC Two wraps up its enlightening Dementia & Us documentary, and the amateur sleuths continue their quest on Channel 4's Murder Island.
The best things to watch on TV on Tuesday, 12 October, 2021
Who Do You Think You Are? - BBC One - 9pm
It's one of TV's favourite shows and it's back for an 18th season, as another load of celebrities agree to research their family tree.
First up is comedian Josh Widdicombe, who is hit by some very unexpected revelations - including being told that he is "uber posh".
Widdicombe's ancestry even includes a royal love triangle, but can he rival the shockers from Danny Dyer's classic episode?
The Great British Bake Off - Channel 4 - 8pm
The super-talented series 12 bakers return to the tent for dessert week, one of the most delicious episodes on the menu.
With regular star baker Jurgen struggling during bread week and Giuseppe creating loaves even Paul Hollywood was jealous of, how will the competition progress tonight?
Get the puddings in, it's sure to make you hungry.
Our Yorkshire Farm - Channel 5 - 9pm
Last week's instalment from Ravenseat Farm was an emotional series opener, but don't expect too much more cheer this time.
The Owen family's 40-year-old Shetland pony, Little Joe, passes away in tonight's episode and the children set about carving a gravestone for him from one of the farm's trees.
Dementia & Us - BBC Two - 9pm
Tonight sees the second and final part of BBC Two's moving dementia documentary which tracks people living with the condition over two years.
In the second part, there are heartbreaking scenes of how their dementia has deteriorated, as well as the impact of the pandemic and its limits on social contact.
Murder Island - Channel 4 - 9.15pm
Amateur detectives hoping to bag a cash prize and prove that they can give Scotland Yard a run for their money return for the second part of the investigation.
It's 24 hours in and all of the teams have their own theories, but many of them have already missed some big clues.
Watch: Amanda Owen leads procession of sheep over Southwark Bridge