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BBC One is back on the ancestry trail tonight, with comedian Joe Lycett taking his turn at Who Do You Think You Are?.
Cult hit comedy What We Do In The Shadows returns to BBC Two for a third series, while Channel 4 heads into caramel week for The Great British Bake Off.
ITV is continuing with its programmes for Climate Action Week and up tonight is natural disaster documentary It Takes A Flood, as well as an inspiring look at how the Orkneys are harnessing their extreme weather for good in Orkney: Britain's Green Islands.
The best things to watch on TV tonight, Tuesday 2 November
Who Do You Think You Are? - BBC One - 9pm
Taking his turn on the genealogy show tonight is comedian Joe Lycett, who's enjoying a bit of a moment after his recent documentary on greenwashing at Shell.
Here, he'll be investigating his own history, finding out the fascinating but heartbreaking tale of his two-times great-grandfather who left behind his life as a chimney sweep to travel the world with the Royal Marines, but found that things took an upsetting turn.
What We Do In The Shadows - BBC Two - 10.05pm
The comedy about suburban New York vampires returns for a third series at the perfect time of year.
Picking up from series two where Guillermo revealed himself as a secret vampire slayer during the group's first invite in 500 years to a prestigious vampire social event, his fate now hangs in the balance.
Meanwhile, Nadja and Nandor are making a power-sharing deal, and Nandor is trying to date an employee from a health club.
It Takes A Flood - ITV - 9pm
Tonight's documentary reveals the devastating effects of flooding on those unlucky enough to live in an at risk area.
It ties in with ITV's Climate Action Week and shows some of the worst affected homes by floods which are now common in the UK, including one house which saw water levels rise up to the gutters.
Scenes of the actual flood waters are shocking, but it also gives a glimpse of the harrowing emotional effects of natural disaster.
The Great British Bake Off - Channel 4 - 8pm
In possibly the most mouthwatering theme week yet, we head back to the tent for caramel week.
The showstopper also sees the bakers create sugar domes to encase their work, always a tense moment, and with just three more episodes left after this one, there's no room for error.
Orkney: Britain's Green Islands - ITV - 8.30pm
Another highlight in ITV's climate change programming tonight is this documentary from Julia Bradbury and Alex Beresford.
The duo travel to Orkney to discover how islanders have harnessed the extreme weather they live with to power their businesses and homes, in an inspiring look at renewable energy and sustainable ways to live.
Watch: Joe Lycett stages stunt outside Shell's London HQ