New Poirot on PBS Sunday

David Suchet stars as suave Belgian super sleuth Hercule Poirot in three new mysteries based on the novels by Agatha Christie on PBS. Whether he’s on holiday abroad, taking a countryside break or simply going about his business near his central London home, Poirot finds himself exercising his “little grey cells” by helping police investigate crimes and murders, whether they ask for his help or not.

His "Murder on the Orient Express," which aired last Sunday was an excellent, albeit darker rendition than previous adaptations.

For this week's Appointment With Death, an archaeological dig is the scene of murder in the Middle East, leading Poirot (David Suchet) to unravel a tragic tale of twisted family secrets. The cast of suspects includes co-stars Tim Curry (Spamalot) and Elizabeth McGovern (“A Room With a View”). Alan Cumming hosts.

MASTERPIECE MYSTERY! “Poirot X: Appointment With Death” airs 18 July 2010 from 9 to 10:30 p.m. on PBS