book cover of Tell Me What You Did
 

Tell Me What You Did

(2026)
A novel by

 
 
Three years ago, his wife went out for a run and never came home.Tonight, on the anniversary episode of his hit true-crime podcast, she calls back.

Eli Mercer built "Find Hannah" out of the worst night of his life. Two million listeners a week. Reddit threads ten thousand comments deep. National magazine covers. A grieving husband investigating his own missing wife live on the air, asking the country to help him find her. The case went cold. The podcast went viral. He learned to perform grief the way other people perform a job.

Then, on the anniversary broadcast, a caller comes through the line. Voice modulated. One sentence.
I know what you did to her.

Click.

Eli laughs it off on air. Off air, his hands shake. Because the caller is right. Eli has been lying for three years, to the police, to his daughter, to his audience, to himself. He has built a national audience around a question only he knows the answer to. And the caller knows it too. The caller knows the layout of his house. The caller knows what Hannah was wearing the night she vanished. The caller has a recording of Hannah's voice that only Eli should have. The caller has her wedding ring.

Over seven nights of live broadcasts, the caller hunts Eli through his own show. Each episode, a new piece of evidence aired in front of two million listeners. Each episode, the audience tilts a little further away from him. The lead detective who never believed his story sits in her kitchen and turns up the radio. His producer starts asking questions she used to ask the suspects. And his eleven year old daughter walks into the studio one night, hears the caller on the monitor, and does not flinch.

By the seventh night, Eli is in a holding cell with a microphone and a fifteen-second delay, recording the finale of his own podcast while the country listens, while the lead detective listens, while the caller waits for him to say the words on air.

What really happened to Hannah Mercer.Who has been calling.What Eli actually did.

A binge-read domestic suspense novel for fans of unreliable narrators, twist endings, missing-person mysteries, and true-crime podcasts.

Inside you will find:
A husband who built a national podcast around a question only he knows the answer to.
A detective who has been listening to every episode for three years.
A caller who knows things only the killer could know.
A final reveal that recontextualizes every page.
A sequel hook readers will demand the next book about.

Perfect for readers who loved Freida McFadden's The Housemaid, Lisa Jewell's None of This Is True, Riley Sager's The Last Time I Lied, Gillian Flynn's Gone Girl, Liane Moriarty's Big Little Lies, Ruth Ware's The Woman in Cabin 10, and B.A. Paris's Behind Closed Doors.

Read it in one sitting. Then tell someone what he did.


Genre: Mystery

Used availability for Hayden Locke's Tell Me What You Did


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