Hercule Poirot, private investigator, has always been just a wee bit odd, and for the last twenty years, David Suchet has delivered brilliant acting in the title role of Agatha Christie's Poirot on British and American television (Mystery!). As one of the school girls comments in the second of two mysteries on Set 4 remarks, he looks a bit like a penguin, but with his Belgian accent and his little waxed mustache, he's the anti-cool of American detectives. That is, of course, with he exception of Peter Falk's Columbo; the two could be equally maddening, equally deductive, driving the villains (and the audience) crazy while solving the crime.

After the superintendent has mixed feelings (and a bit of a guilty conscience) about the conviction of young James (Joe Absolom) for the murder of his landlady, Mrs. McGinty, Poirot is called in to investigate who really killed the old woman in "Mrs. McGinty's Dead." While mixing his witty charm and the absurd deductive techniques, Poirot manages to infuriate everyone, producing enough dirt on all of the characters involved, before, in typical grand Agatha Christie style, delivering the final verdict as the group of potential suspects and the audience sits spellbound.

In the second of the two mysteries contained here, first aired in the fall of 2008, "Cat Among The Pigeons," Poirot finds himself embroiled in social scandal and murder at the Meadowbank School for Girls. Boasting an even more recognizable cast for American fans, the episode packages Natasha Little (Vanity Fair), Harriet Walter (Atonement), Claire Skinner (Bridget Jones' Diary), Katie Leung (Harry Potter), and Anton Lesser (Miss Potter) into a very ensemble cast. While Miss Bulstrode (Walter) tries to maintain order in the midst of the murder, Poirot struggles to cut to the chase and solve the mystery surrounding a murder doll and a dead woman, before the school ends up tarnished permanently.

For longtime fans and new ones seeking a bit more background, the fourth Poirot set includes "Super Sleuths: Poirot," a behind-the-scenes look at the show, through interviews with several of the "usual suspects." Joining Poirot are Philip Jackson (Chief Inspector Japp), Hugh Fraser (Captain Hastings), writer Anthony Horowitz, director Ed Bennett, and others.

For all of the bells and whistles, and the subterfuge that surrounds each mystery, the shining star remains Suchet's Poirot. While he may be strange, it's the truth he's after, regardless of the ridicule or danger he faces in pursuit of what really happened and who is really at fault. It's the beauty of the pair of mysteries, and the beauty of Poirot. Maybe the truth really can set you free!