After a seemingly neurotic young heiress tells Ariadne Oliver and Poirot that she thinks she may have killed someone, her ex-nanny is found with her wrists slashed.



(novel), (screenplay)

Watch Now

From $9.99 (SD) on Amazon Video




Episode cast overview, first billed only:
David Yelland ...
Norma Restarick
Claudia Reece-Holland
Frances Cary
David Baker
John Warnaby ...
Inspector Nelson
Caroline O'Neill ...
Nanny Lavinia Seagram (as Caroline O'Neil)
Andrew Restarick
Sir Roderick Horsfield
Lucy Liemann ...
Tim Stern ...
Alf Renny
Bus Ticket Inspector
Tessa Bell-Briggs ...
Daphne the Waitress


Poirot is visited by a distraught girl, Norma Restarick, who fears she may have killed someone but runs away, telling him that he's too old rather than explaining further. By coincidence, Poirot's friend Ariadne Oliver lives in the same apartment block as Norma and her two roommates and recently went to their party, where Norma was distressed when she was offered ice cream. Norma's ex-nanny, Miss Lavinia Seagram, an alcoholic, also lived in the block but was recently found dead, with the verdict being suicide. Ariadne is unconvinced and searches the nanny's apartment, finding a clue which she puts in her handbag. Soon afterward she is attacked and the bag and its contents are stolen. Poirot visits the Restarick family home in the country, owned by Norma's great-uncle, Sir Roderick, an elderly and half-blind man who is dependent upon Sonia, his young personal assistant (who may well be a gold-digger). Andrew Restarick, Norma's father, explains to Poirot that he spent much of Norma's ... Written by don @ minifie-1

Plot Summary | Add Synopsis


See all certifications »

Parents Guide:






Release Date:

18 July 2010 (USA)  »

Company Credits

Show detailed on  »

Technical Specs


| (11 episodes)


See  »

Did You Know?


Look closely and you'll see a painting in the artist's studio that was used fifteen years earlier in the episode, "Dead Man's Mirror." See more »


Nurse: [Referring to Ariadne who's just suffered a concussion] She's delirious!
Ariadne Oliver: No, I'm not!
Hercule Poirot: I assure you, this is how she is.
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

Actually, surprisingly well-done!
27 October 2008 | by (Canada) – See all my reviews

My "job", when reviewing Agatha Christie films, is fairly simple. Most of the time, when a film is faithful to the book, it gets a positive rating, and when it is a complete rewrite, I pan it. But now we come to a difficult situation where I must admit that "Third Girl" was not faithful to the novel, but it was still very good.

I have to say, I really enjoyed "Third Girl"! Now, let's be fair to Agatha Christie. "Third Girl" was not her best book. Entertaining? Definitely. Good? Oh yes. Great? Not quite. Many coincidences occur throughout, and even Mrs. Oliver's appearances are entirely incredible- she's the "deus ex machina" of the book.

In THIRD GIRL, not much happened. So, if there ever was a Christie that could use some spicing up for TV, it was definitely this one. I was perfectly open to changes, and I am so glad it turned out so well! David Suchet is once more flawless as Poirot. Zoe Wanamaker simply shines as Ariadne Oliver, adding a third brilliant performance as the famous novelist (alongside "Mrs. McGinty's Dead" and "Cards on the Table").

The opening scene with Norma ("You're too old, Monsieur Poirot") was so well-done! It was very comic, and grabbed my attention immediately. Norma mentions Mrs. Oliver by name, saying she recommended Poirot to her. This makes his subsequent visit to Mrs. Oliver far more credible. This is one of the ways the incredible coincidences in the novel are "ironed out", so to speak.

Now, the film takes more than a few liberties. If you thought the book was flawless and want a faithful adaptation, you may be disappointed. But it is very entertaining as it is. The few things that ARE close to the book (ex: Mrs. Oliver trying out her hand at trailing suspects; the very first scene) are done very well indeed.

In short, THIRD GIRL spices up a rather drawn-out novel very neatly for television. If you're open to changes in this film, I don't think you'll be disappointed.

55 of 59 people found this review helpful.  Was this review helpful to you?

Message Boards

Recent Posts
Curtains infanttyrone-1
What season should I start on? mkhobson-15509
Is it Portugal? petzxy
Ugh, the American accents gardnert73
Have you ever correctly guessed the murderer? sweetiepumpkin
Elephants Can Remember. What did everyone think? djosephh
Discuss Third Girl (2008) on the IMDb message boards »

Contribute to This Page

Create a character page for: