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§Author· 5 books

Riley Sager

Also known as Todd Ritter, Alan Finn

Suspenseful mystery and thriller fiction often relies on unsettling environments and psychological tension to keep audiences engaged. The breakout novel Final Girls established a prominent new voice in contemporary suspense, combining classic horror tropes with intricate plot twists.

Career & Background

Born Todd Ritter, the Pennsylvania native worked as a journalist, editor, and graphic designer before transitioning into full-time fiction. Early in his career, he published mysteries under his real name as well as the pen name Alan Finn. He achieved widespread commercial success after adopting the pseudonym Riley Sager, launching a series of bestselling thrillers that have sold over four million copies worldwide and appeared in 40 countries. His debut under the name, Final Girls, optioned for film development by Universal Pictures and Anonymous Content, marked his transition to writing novels full-time. He currently resides in Princeton, New Jersey.

Writing Style & Themes

His writing style is recognized for blending atmospheric settings, claustrophobic houses, and unsettling occurrences with subverted thriller conventions. Rather than relying on rigid pre-planned outlines, his process focuses on creating suspenseful scenarios where isolated protagonists confront lingering past trauma and hidden domestic secrets. Recurring themes include memory, dark local histories, and high-stakes psychological confrontation.

Major Works

  • Home Before Dark — A haunted-house thriller centering on a woman who returns to the estate made famous by her father's paranormal memoir to uncover the truth behind her family's past.
  • The Only One Left — A gothic suspense novel following a home health aide assigned to care for an aging woman who was famously accused of a brutal family murder decades earlier.
  • Middle of the Night — A neighborhood mystery in which a man returns to his childhood home to investigate the mysterious disappearance of his best friend years prior.
  • With a Vengeance: A Novel — A fast-paced psychological thriller featuring high stakes, shifting motives, and unexpected narrative turns.
  • The Unknown: A Novel — The author's latest book, set to be released on August 4.
Wikipedia ↗
§All Books
Cover of The Only One Left by Riley Sager

The Only One Left

Riley Sager, 2023
539 ratings
Cover of Home Before Dark by Riley Sager

Home Before Dark

Riley Sager, 2020
383 ratings
Cover of Middle of the Night by Riley Sager

Middle of the Night

Riley Sager, 2024
127 ratings
Cover of With a Vengeance: A Novel by Riley Sager

With a Vengeance: A Novel

Riley Sager, 2025
1 ratings
Cover of The Unknown: A Novel by Riley Sager

The Unknown: A Novel

Riley Sager, 2026

§ About Riley Sager's books

Books on SansFiction
5
Published
2020–2026
Average rating
3.9 / 5 across 1,050 ratings
Genres
Mystery, Fiction, Adventure, Horror Literature & Fiction

Start here: The Only One Left (2023)

At seventeen, Lenora Hope Hung her sister with a rope Now reduced to a schoolyard chant, the Hope family murders shocked the Maine coast one bloody night in 1929. While most people assume seventeen-year-old Lenora was responsible, the police were never able to prove it.

Common questions about Riley Sager

Who is Riley Sager?
Born Todd Ritter, the Pennsylvania native worked as a journalist, editor, and graphic designer before transitioning into full-time fiction. Early in his career, he published mysteries under his real name as well as the pen name Alan Finn.
What is Riley Sager best known for?
Riley Sager is best known for The Only One Left, published in 2023 with 539 ratings and a 3.9 average. It is the most-rated of Riley Sager's books on SansFiction.
How many books has Riley Sager written?
SansFiction lists 5 books by Riley Sager, published between 2020 and 2026. The most popular are The Only One Left, Home Before Dark, Middle of the Night, With a Vengeance: A Novel and The Unknown: A Novel.
Which Riley Sager book should I read first?
The Only One Left is the usual place to start: it is Riley Sager's most-rated book here, with a 3.9 average.
What genres does Riley Sager write?
Riley Sager's books on SansFiction are tagged Mystery, Fiction, Adventure and Horror Literature & Fiction.

Explore: Mystery · Fiction · Adventure · Horror Literature & Fiction