The second series of Fortitude makes its dramatic return on Sky Atlantic, Walter Presents new gritty drama Case on Channel 4 and Winterwatch returns to Poole Harbour on BBC Two.
Monday: Reggie Yates: Hidden Australia - Addicted to Ice
BBC Three (Avaliable on BBC iPlayer from 10am)
Following last week's installment of Hidden Australia: Black in the Outback, Yates visits Melbourne where there is a high demand for an addictive drug called Ice. This has led to increased violence and crime, and Yates goes to find out why.
Channel 4, 10pm
A young ballerina is found hanged on the main stage at the National Theatre. A suicide? Everyone thinks so, but three determined individuals believe there is another story to be told and not everything is what it seems. Full of liars and questionable motives, this is not one to be missed.
The rest of the series will be made available on All 4 immediately after the show.
BBC Two, 8pm
Winterwatch returns with Chris Packham, Michaela Strachan and Martin Hughes-Games, bringing you everything you need to know about wildlife at this time of year.
They will be back in Dorset at RSPB Arne, the most biodiverse region in the UK, with more species of animals and plants within 10 miles of Wareham than anywhere else in the country.
Sky Atlantic, 10pm
Two years have passed since the first series of Arctic thriller Fortitude.
Now there's a missing sheriff, murderers on the loose and a gruesome death that sends the town into a frenzy, disrupting the peace yet again.
Friday: The Last Leg
Channel 4, 10pm
The Last Leg returns for its tenth series on Channel 4. This week actor David Tennant joins the gang, dissecting the week's current affairs.
Saturday: Let It Shine
BBC One, 7pm
In the final week of auditions, judges Gary Barlow, Dannii Minogue, Martin Kemp and guest-judge Amber Riley continue their search for the most talented individuals, to star in Barlow's upcoming Take That Musical.
In the final episode of this series, Endeavour Morse (Shaun Evans) and his mentor Detective Inspector Fred Thursday (Roger Allam) are back solving another complex case.
When a body is found in a marshland outside of Oxford, everyone assumes it is the remains of Dr Matthew Laxman, a botanist who mysteriously disappeared near the site five years earlier.
It is revealed that the body is actually thousands of years old, but Morse and Thursday suspect there may still be clues about the missing botanist when a modern pair of glasses is also found near the body.