Heartwarming / Poirot

• Several, particularly in The ABC Murders when Cust shows up to emotionally thank Poirot for clearing his name and saving him from the gallows. Basically, any time Poirot saves an innocent person falsely accused of a crime, but Cust is especially heartwarming because of the poor guy's status as The Woobie. He even starts a friendship with Hastings, and the two quickly bond over the crocodile story Hastings had spent the entire episode wanting to tell someone, anyone about.
• In The Mysterious Affair at Styles, when Hastings stumbles into Poirot at the store while talking with the clerk, Poirot calls out, "Hastings?" Then, when both Poirot and Hastings recognize each other, they let out a Squee of excitement and embrace one another in the traditional French/Belgian manner, with two kisses to the cheeks. Poirot is especially effusive, calling out in excitement, "Mon ami!!", whilst Hastings presses his hand.
  • It's especially heartwarming in context, with Poirot having become a refugee and Hastings recently off the front.
  • Also in the episode, when Japp shows up with one of his superiors and notes Poirot's warnings about not arresting Alfred Inglethorp despite the evidence pointing towards him. The fact that Japp believes him immediately despite the two's occasional clashes and general Snark-to-Snark Combat throughout other episodes really says a lot about the trust he has in his peculiar friend.
• In The Murder of Roger Ackroyd, Poirot is surprised to find Inspector Japp as a familiar face. As a result, he lets out a Squee of excitement and attempts to greet Japp in the traditional French manner. However, in contrast to Captain Hastings, the Inspector doesn't seem too keen on all the hugs and kisses - eventually opting for a good English handshake.
• Poirot uniting Eleanor Carlisle with the loyal Dr. Lord at the end of Sad Cypress.
• In "Miss McGinty's Dead", the scene where Poirot reunites James Bently (who Poirot has just saved from the Gallows) with the woman he loves.
• Poirot seeing that he has managed to finally bring some peace and happiness to the troubled Norma Restarick at the end of Third Girl.
• In the episode "Double Sin", Poirot has been suffering from depression, and slips into a lecture Inspector Japp is giving on police work. He hears Japp speak very negatively on Private Detectives ... then he hears Japp mention that Poirot is the one exception to the rule, and compliments him as a fine and worthy comrade. This heartens Poirot and inspires him to solve the case.
  • Japp's speech itself shows how much he holds Poirot in high regard.
  The professional private detective, ladies and gentlemen, is not the glamorous figure of fiction. He is a man who, failing in more worthy walks of life and being of meddlesome and troublemaking disposition, finally comes to rest in a dingy office over the chip shop, where he plies for hire in the sordid world of petty crime and divorce. Except, I have to say, for one. I have been fortunate in my career, in that many - in fact most of my cases have been shared with the most extraordinary of private detectives and, if I may borrow a word from his own native tongue, that doyen of the Belgian police force, Monsieur Hercule Poirot. I think I may say without fear of contradiction that Hercule Poirot has one of the most original minds of the 20th century. Intelligent, brave, sensitive, devastatingly quick, Hercule Poirot stands head and shoulders above any other detective of my considerable experience.
• A very bittersweet one from Curtain: "They were good days. Yes, they have been good days."
• A small moment from "Four and Twenty Blackbirds" when Poirot cooks Hastings dinner. Despite the former's consistent teasing of the latter, clearly he cares about his friend.
• The ending of Peril at End House as well, when Poirot and his three friends, having just successfully wrapped up a mystery together, enjoy ice cream on the shore. Even Japp is invited!
• "The Double Clue" involves Japp afraid he's about to lose his job if he can't figure out a case. With Poirot seemingly distracted by Countess Vera Rosakoff, Hastings and Miss Lemon step in to try to help Japp instead. While they don't get particularly far, it's sweet that they try to help.
• The end of The Dream has a moment that's both funny and heartwarming. Poirot buys Miss Lemon a gift. She thinks it's a new typewriter, which she'd asked for earlier. It's actually a clock, to spare her having to look out the window to find a clock. Miss Lemon isn't as enthusiastic about the clock as she would have been about a typewriter. Poirot remains blissfully oblivious and thinks he's done her a good turn, and in a way he has; even though his choice of gift was misguided, it's clear he really does care about her and Hastings.
• At the end of The Adventure of the Egyptian Tomb, Poirot gives Miss Lemon a little Egyptian cat artifact to comfort her after the death of her own beloved pet cat.
• The end of The Yellow Iris, a rather dark and melancholy episode. While Iris Russell is still dead, Poirot saves her sister. The look on Chapell's face when he sees his beloved survived says it all.
  • At the very end of the episode, Hastings takes Poirot for some good old English fish and chips - despite Poirot's vehement complaints about English cuisine (or lack thereof) at the beginning of the episode. Poirot is shocked to discover that he apparently loves the chips: his delighted little smile says it all.
• During The Case of the Missing Will when a suspect, angered by Poirot, appears to threaten him, Hastings wordlessly steps between the two, puts a hand on his shoulder, and gives him a menacing look in order to protect his friend.
• In Elephants Can Remember, Mrs. Oliver has to deal with the memories of her friend Margaret's death and the frustration of having no evidence (at first) to further the case or to help her goddaughter Celia. The resolution comes as a great relief to her, as she can finally leave that tragic event behind her and see Celia free to marry Desmond.
  Mrs. Oliver: You and I are elephants, you know? We're good at remembering.
  Poirot: No, no, Madame, we're human beings. And human beings, mercifully, they can forget.
• A rather bittersweet one, but heartwarming nonetheless, occurs at the end of The Chocolate Box. It's bittersweet because it shows that Poirot Did Not Get the Girl, but the fact that his two friends Jean-Louis and Virginie named one of their sons after him shows that they're still rather fond of him after all these years.
• In Lord Edgware Dies:
  • When Poirot receives the news that Hastings is returning to Britain from Argentina, he pretty much drops everything and rushes to the airport with Miss Lemon in tow. Poirot is simply overjoyed at meeting his old friend again.
  • It's later revealed that Hastings lost a substantial amount of money after investing into a scam railroad. To help cheer him up, Miss Lemon suggests that Hastings accompany Poirot to Carlotta Adams' impressions show, which Poirot had rejected earlier due to a lack of interest. Poirot takes up the offer, if only to help cheer up his friend. Later on, when the Duke of Merton gives Poirot a monetary reward for his services in the case, Poirot has him make out the check to Hastings offscreen, allowing him the chance to get back his money through a wiser investment.
• In Evil Under the Sun, Poirot, Hastings, Japp, and Miss Lemon all have a laugh at the end. It's especially poignant given that the last time we see them all together would be in the final series, Series 13. (Hastings would return in the next episode, Murder in Mesopotamia, but Japp and Miss Lemon wouldn't return until the final series.)

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