Some people just can't die in a neat and orderly fashion. Their wills, the listing of their last wishes, have gone missing and as a result, the heirs are fighting over the deceased's possessions. Sometimes the will has been intentionally hidden to keep it out of the wrong hands. Sometimes it's been stolen by someone who wants to get something out of it. Sometimes it's just been misplaced.
A complication arises when the character had actually left a will, but there is another, later one, which would of course supercede it.
- In A Cinderella Story, Sam's stepmother had initially gotten everything that belonged to Sam's father because he didn't make a will stating otherwise but it was eventually revealed he did leave a will and Fiona knew about it. To avoid prison time for this, she agreed to perform "community services" at the diner.
- The 1997 film adaptation of The Borrowers involves an unscrupulous lawyer claiming that the deceased in question never wrote a proper will, thus making him the sole beneficiary of her estate including the house that her niece's family — the film's protagonists — are currently living in. In reality, she had an extra copy hidden in the walls of the house itself because she never did trust lawyers.
- In Inception, the protagonists go into the mind of the heir to an international business empire while he dreams to persuade him to break up his father's business. The story they spin him within the dream involves him getting kidnapped by terrorists who tell him that his father left a hidden will inside a safe. In each successive layer of the dream, the goal is to convince the heir to find this "will". In the bottom layer of the dream inside an alpine mountain base, he finally has convinced himself sub-consciously to break up the company and he indeed "finds" a vault inside the base with a "will" from his father, stating that.
- In Who Framed Roger Rabbit, Marvin Acme's will is mistaken for a sheet of blank paper because Mr. Acme wrote it in invisible ink. Roger used the paper to write a love poem to his wife, and near the end of the film when he takes it out to read it, the words suddenly appear on the other side.
- The first book in the Nancy Drew series, The Secret of the Old Clock, revolves about her realizing that an old man had left a later will, and tracking it down.
- Judge Dee: One case deals with a former governor dying, and his first son kicking out the governor's second wife and child. Though it was certain the governor would leave his wife something, the son produced a will that left her nothing. Judge Dee finds the real will over the course of the story.
- There's a Miss Marple short story by Agatha Christie called Motive vs. Opportunity, where the will had been recently rewritten to leave all the dead man's money to a Phony Psychic, instead of his family. However, when the envelope that should have contained the will is opened, all it contains is a piece of blank paper. Then it's subverted, as the will is still right where it was, it was just written with disappearing ink.
- Several Lord Peter Wimsey stories involve this:
- In "The Undignified Melodrama of the Bone of Contention," the governor's will is discovered next to an old book in a decrepit library. Lord Peter deduces, from the water stains on the book but not the will, that one of the heirs had hidden it there to keep the condition from being fulfilled.
- In "The Fascinating Problem of Uncle Meleager's Will," Meleager Finch hides his will and leaves his niece a set of clues to its location in the form of a crossword puzzle.
- In Crocodile on the Sandbank, the first Amelia Peabody mystery, the importance of the MacGuffin turns out to be that it has a lost will hidden inside.
- The John Bellairs book The Mummy, the Will and the Crypt has cereal magnate H. Bagwell Glomus, whose will was hidden away before his suicide, and young Johnny Dixon's desperate hunt for it (he wants the reward money to pay for a brain surgeon for his grandmother, whom he believes to be dying of a brain tumor), which is opposed by Glomus's sister, who wants the will to stay hidden because she fears her brother hadn't left her anything (without a will, she at least got some of his money). Johnny ultimately finds where the will was hidden, but it's destroyed before anyone can read it. He still gets the reward money, since he DID find where it was hidden.
- The Ellery Queen novel The Greek Coffin Mystery starts when Ellery and his father Inspector Richard Queen are called in to locate the missing will of a wealthy art collector. Ellery narrows down the possible location of the will to a single location: the dead man's coffin. When it is exhumed, however, it contains no will but the surprising addition of a strangled ex-convict.
- In a throwaway line from the second series of Arrested Development, Barry Zuckercorn starts talking nonsense to try to fudge the fact that he lost George Sr.'s will. He is rescued at the last minute by the fact that George isn't dead.
- In an old episode of Poirot called 'The Case of the Missing Will', this happens after a dying man asks Poirot to be the executor of his new will. The man dies before he can write it and the previous one is discovered missing, stolen in fact. (The short story of the same title is very different and doesn't exactly fit the trope.)
- Any Number Can Die: Just as the will is about to be read the lights go out and when they come back on the will is gone. However it is immediately revealed that Hannibal, the detective, has it. Being Genre Savvy, he grabbed it before anyone else could. It later ends up missing anyway.
- A flashback episode of Hanna-Barbera's Pound Puppies shows that, in order to keep Katrina Stoneheart from inheriting her aunt's Puppy Pound, the puppies needed to find her aunt's will, where it was stated that the pound must go to Katrina's niece Holly.
- Chip 'n Dale Rescue Rangers: The eldest Baskerville brother inherited their father's manor because there was no (known) will stating otherwise. Hidden somewhere in the house, there was a will through which the youngest son inherited.
- Popeye was about to inherit billions from an uncle but a gust of wind blew the will away when it was about to be read and Popeye spent most of the episode trying to retrieve it. He eventually found it but learned that, instead of money, his uncle left debts.
- Vladimir Lenin's will contained several last orders regarding the cadre of the Communist Party, which included firing Josef Stalin. Of course, it was conveniently misplaced by Uncle Joe and declassified only after his death.