Highlights 7/25 to 7/31

While on holiday in Syria, Poirot finds himself drawn into a murder investigation located at an archaeological site on Masterpiece Mystery! at 8 p.m. Sunday.

Rhonda Bradley never met her father. He’s still listed Missing in Action from the Korean War. In a letter dated 1953, her father mentioned a man he said saved his life. History Detectives at 8 p.m. Monday researches the “Korean War Letter” to find the man Rhonda believes is a hero.

In episode three of Turmoil and Triumph: The George Shultz Years at 9 p.m. Monday, Shultz leaves the State Department and continues to travel the world as a passionate advocate for nuclear disarmament.

Faces of America episode four at 10 p.m. Monday reveals both distant relatives and surprising shared ancestral connections for several celebrities including Meryl Streep, Mike Nichols, Yo-Yo Ma and Eva Longoria.

Nova at 7 p.m. Tuesday explores the origins of the first fighter planes and the evolution of aerial tactics on “Who Killed the Red Baron?”

Alan Alda explores his own brain as he searches for the features that make humans unique on Human Spark at 8 p.m. Tuesday.

“Presumed Guilty” is the story of two young lawyers and their struggles trying to free innocent people from the criminal justice system in Mexico on POV at 9 p.m. Tuesday.

Las Misiones: the Missions of Texas at 10 p.m. Tuesday is a visual celebration of the structures as historic monuments, religious symbols, and important centers of community and fellowship.

Paul McCartney accepts the annual Library of Congress Gershwin Prize for Popular Song in a celebration at the White House at 7 p.m. and 8:30 p.m. Wednesday.

Legendary New Orleans songwriter Allen Toussaint hits the Austin City Limits stage at 10 p.m. Wednesday with songs from his LP, The Bright Mississippi, and classic hits like “Southern Nights.”

Cecile Richards, president of Planned Parenthood, talks about health care and other issues on Texas Monthly Talks at 7 p.m. Thursday and 8:30 p.m. Friday.

Celtic Pilgrimage at 8 p.m. Thursday journeys through the sacred landscape of western Ireland, guided by best-selling Irish author, poet and philosopher John O’Donohue, with an introduction by actor Mike Farrell.

James Taylor and Carole King perform at the Troubadour to celebrate the 50th anniversary of the legendary Los Angeles club at 7 p.m. Saturday.