Highlights: October 14-20

On Nature at 6 pm Sunday, Chris Morgan takes on his greatest challenge in tracking large predators – to find and film the Siberian tiger living wild and free in Russia’s far eastern forests – in “Siberian Tiger Quest”.

Call The Midwife at 7 pm Sunday and 9 pm Saturday places Jenny on the district nursing roster for a few weeks, through which she forms a friendship with a gentle old soldier.

On Masterpiece Classic Presents: Upstairs Downstairs, Series 2 at 8 pm Sunday, Lady Agnes catches the eye of charismatic American millionaire Caspar Landry while Mrs. Thackeray makes a momentous decision that throws the running of 165 into chaos.

Standing Bear’s Footsteps at 9 pm Monday is the story of an Indian chief who went to court to prove he was a person… and in the process redefined what it means to be an American.

With a frank, behind-the-scenes approach, Race 2012 at 7 pm Tuesday navigates the high-stakes world of racial pollsters, strategists, spin doctors and candidates as they compete for voters of many ethnic and racial groups.

PBS Newshour at 8 pm Tuesday presents coverage of the 2012 presidential debates.

Nature at 7 pm Wednesday takes viewers into the secretive world of the largest and least known member of the weasel family to reveal who this dynamic little devil truly is in “Wolverine: Chasing The Phantom”.

NOVA at 8 pm Wednesday investigates how modern forensics, including the analysis of fingerprints, bite marks, ballistics, hair, and tool marks, can send innocent men and women to prison and sometimes even to death row in “Forensics on Trial”.

On NOVA ScienceNow at 9 pm Wednesday, Chris Pogue gives the third degree to scientists pushing the limits of technology — not only to solve horrific murders — but also to try to prevent crimes before they even happen in “Can Science Solve Crime?”

Diane Ravitch, one of the country’s leading thinkers about education. talks on Overheard with Evan Smith at 7 pm Thursday.

Arts in Context at 7:30 pm Thursday highlights contemporary and performance art from Austin’s Fusebox Festival 2012.

Chet heads to the “cowboy capital of the world”, visits Dublin Bottling Works, sees some barrel racing at Lone Star Arena, and polishes it off with chicken fried steak on The Daytripper at 8:30 pm Thursday.

POV at 9 pm Thursday presents “Sun Kissed”, the story of Dorey and Yolanda Nez as they confront cultural taboos, tribal history and their own unconventional choices to learn the shocking truth: the consequences of the Navajos’ Long Walk — their forced relocation by the U.S. military in 1864 –are far from over.

The Texas Debates: Race for U.S. Senate at 7 pm Friday features the Republican and Democratic nominees for U.S. Senate, former Texas Solicitor General Ted Cruz (R) and former state Rep. Paul Sadler (D). Because of the Texas Senate Debate, Washington Week will air at 8 pm and Moyers and Co will air at 9 pm.

Voces on PBS at 9:30 pm Friday presents “Lemon”, the story of one man’s journey to bring his life story to the New York stage while battling his darkest demons.

Pick up creative ideas for design and plants on this preview of Austin’s Garden Conservancy tour on Central Texas Gardener at noon Saturday.

Austin City Limits at 7 pm Saturday presents a double-header with bottleneck guitar-slinging Bonnie Raitt and soul/gospel legend Mavis Staples.