David Suchet bids farewell to Agatha Christie's Poirot

GALMPTON, England — The final push to the top of his personal Everest consisted of about 50 dainty steps, in the precise and idiosyncratic gait he has perfected over 25 years.

David Suchet paced up to the door of the house, glanced around, gave a tip of his hat and the ghost of a smile, and disappeared inside. When the cameras stopped rolling, he emerged and raised his arms in triumph as a crew member called a wrap on one of the most remarkable achievements in recent British television history.

It was the last day of filming — ever — for Suchet as Agatha Christie's famous detective Hercule Poirot, a character he first played in 1988 and that has become the defining role of his career.

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No one could've guessed then that the series would span a quarter-century or that the classically trained Suchet would complete the entire catalog of whodunits featuring the eccentric Belgian investigator, including 33 novels and dozens of short stories. Or that, with a sense of poetic justice, the final shot would take place at Christie's own summer home here in southwest England, a Georgian manor set in the gorgeous green countryside of her native Devon.

"Extraordinary, absolutely extraordinary," said Suchet, who waved away any suggestion of grief over the end of his life with Poirot. "I don't think you can ask anybody who's reached the summit of Everest whether they're sad."

The climb has entailed 70 episodes, with dead bodies littered all over the world — mostly in England, but also on the Orient Express, a Nile steamer and a plane bound from Paris to London. Filming of the final five full-length features finished at the end of June; one of them, "Elephants Can Remember," has already aired on Britain's ITV, with the rest to follow in the fall.

American viewers will be able to watch the new episodes next year on PBS, where the show draws an audience of about 5 million, and a national rating about 80% higher than the public network's prime-time average. "Agatha Christie: Poirot" is also popular in Brazil, Finland and Japan, among other countries, making Suchet, 67, an international star. (There have been other memorable Poirots, notably Albert Finney in "Murder on the Orient Express" and Peter Ustinov in "Death on the Nile," but most fans regard Suchet's portrayal as the definitive Poirot.)

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He's grateful for that because it has afforded him the luxury of pursuing less lucrative jobs in between, particularly on the stage, where he has built up a sterling résumé. Critics showered praise on his 2010 turn in Arthur Miller's "All My Sons" in London's West End, in which Suchet performed with Zoe Wanamaker, who also plays his sidekick in several of the recent "Poirot" programs.

"'Poirot' … has literally subsidized the other side of my career, which is my theater side," he said. "One has paid for the other, so I come out not broke, which is very lucky."

It was only about eight years ago, after he had starred in about 50 episodes, that Suchet realized he was approaching striking distance of completing the canon of Poirot stories. He soon made it his personal ambition.

By then, he'd already spent more than a third of his adult life getting used to the extravagant fake mustache and extra padding — he calls it his "armadillo" suit — along with the fussy mannerisms, outsized vanity, Belgian accent and penguin-like walk of Poirot. The series had become enough of an institution to attract big names from both sides of the Atlantic, including Elliott Gould, Jessica Chastain, Barbara Hershey, Hugh Bonneville, Michael Fassbender and Greta Scacchi.

But even as the list of outstanding works shrank and the finishing line loomed, there was never a guarantee that "Poirot" would be renewed whenever it went on hiatus, which sometimes lasted two years or more. In 2011, speculation swirled that the series was done for, until ITV announced that it would commission the remaining five episodes after all, to the relief of both Suchet and his fans.

"I was always anxious that it would never happen, right until the end," the actor said, his real voice a much richer baritone than his character's. "I have not known any year whether I was going to do it the next year. It was literally touch and go."

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In addition to "Elephants Can Remember," the new episodes are "The Big Four," "The Labors of Hercules," "Dead Man's Folly" and "Curtain: Poirot's Last Case," in which the detective dies after an illustrious career stretching from the mid-1920s till just before Christie's own death in 1976. She wrote "Curtain" in the '40s, but it was locked away in a vault before being published in 1975, a literary event that prompted the New York Times to run its first front-page obituary of a fictional character.

Early on in the TV series, the makers decided to set every episode in the 1930s no matter when it was written. That allowed them to pour on the fabulous Art Deco details — "we have people who watch 'Poirot' for the cars," said Rebecca Eaton, executive producer of PBS' "Masterpiece" — and that lends the series a comforting nostalgia, a sort of "Downton" of death.

It also enabled producers to shoot the stories out of their written sequence, as happened with the final five adaptations. "Curtain," which will be the last to air, was filmed first, because it was easier for Suchet to lose weight to play an aged, frail Poirot and then gain it back for the remaining episodes.

There were emotional reasons too.