Trail Belgian super sleuth Hercule Poirot as he exercises his "little grey cells" to solve crimes. Sunday at 9pm.

After 25 years playing Hercule Poirot, British actor David Suchet explores the enduring appeal of his most legendary character. August 8 at 9:15pm.

Follow a 25-year human/seal friendship that weathered every kind of challenge, including blindness. Wednesday at 8pm.

Join Joy and Mark in Australia to uncover the reproductive secrets of the pouch-wearing marsupials.

Trail a brilliant defense lawyer (David Tennant) who gets a trial that changes his life forever. August 10 and 17 at 9pm.