This week on WGCU TV

. WEDNESDAY, JUNE 24 9 p.m. "The Music Instinct: Science and Song"

"Masterpiece Mystery!" Poirot New work in neuroscience is giving us clues to the mysteries of how and why music penetrates the brain and the emotions.

. THURSDAY, JUNE 25 8 p.m.

"Brain Fitness Program"

Learn how to get your brain in better shape by driving beneficial chemical, physical and functional changes.

. FRIDAY, JUNE 26 8:30 p.m. "Untold Stories Paradise? Or Paradise Lost? The Story of Captiva"

Legend has it — and historians dispute — that the pirate Jose Gaspar gave it a name by holding female captives on a Southwest Florida barrier island. Pirates or no pirates, there is no denying the almost mythical lure of Captiva's alabaster beaches and tropical island ambience. Is that isolated tranquility being overrun by affluence gone wild?

. SATURDAY, JUNE 27 8 p.m.

"Antiques Roadshow Tampa - Hour 2"

Marblehead art pottery; pre-war German and Japanese character canes; Sioux artifacts; and the first book printed in Wyoming.

. SUNDAY, JUNE 28 9 p.m. "Masterpiece Mystery!"

Poirot: Mrs. McGinty's Dead

Mrs. McGinty was killed by a brutal blow to the head, and her lodger is sentenced to hang for the murder. As Mr. Poirot joins forces with famed crime novelist Ariadne Oliver to save the lodger from the gallows, he doesn't realize his own life is in danger. Featuring an all-star cast.

. MONDAY, JUNE 29 9 p.m.

"History Detectives"

PsychoPhone; World War II Dog Training Letter; Pancho Villa Watch Fob

10 p.m.

"History Detectives"

Manhattan Project Patent; Galleon Shipwreck Beeswax; Creole Poems

. TUESDAY, JUNE 30 9 p.m.

"NOVA ScienceNow"

Breakthroughs in engineering artificial diamonds; solving the deadly post-9/11 anthrax attacks; a look at "AutoTune," the controversial computer pitch-correction software that turns sour notes into sweet ones; and a profile of computer scientist Luis von Ahn.