A bank robbery. Ten suspects. One murder.

Everyone in This Bank Is a Thief is the brilliantly clever fourth installment in Benjamin Stevenson's bestselling Ernest Cunningham Mysteries series. Packed with laugh-out-loud humor, impossible puzzles, and jaw-dropping twists, this locked-room mystery is perfect for readers who love Richard Osman, Anthony Horowitz, and Agatha Christie with a modern edge.

Amateur sleuth Ernest Cunningham has survived family reunions filled with murder, suspicious train journeys, and holiday mysteries. But nothing has prepared him for becoming a hostage during a bank robbery.

The bank is sealed.

No one gets in.

No one gets out.

Then someone is murdered.

With the doors chained shut and every person inside hiding secrets of their own, Ernest realizes this isn't just a bank robbery—it's multiple crimes unfolding at once. Every hostage could be a thief. Every thief could be a killer.

As the police race to break in, Ernest must uncover who is stealing what, who is willing to kill for it, and whether he'll survive long enough to solve the mystery.

Smart, witty, and impossible to predict, Everyone in This Bank Is a Thief delivers another wildly entertaining mystery full of clever clues, unreliable suspects, and Benjamin Stevenson's signature metafictional style.

Why You'll Love Everyone in This Bank Is a Thief

• Ernest Cunningham Mysteries Book 4
• Locked-room mystery
• Clever fair-play whodunit
• Laugh-out-loud humor
• Fast-paced suspense
• Brilliant plot twists
• Unreliable narrators
• Perfect for mystery lovers

Tropes & Themes

• Locked-room mystery
• Hostage situation
• Amateur sleuth
• Multiple suspects
• Bank robbery
• Murder mystery
• Clever puzzles
• Metafiction
• Dark humor
• Unreliable narrator

Perfect For Fans Of

• Richard Osman
• Anthony Horowitz
• Janice Hallett
• Stuart Turton
• Agatha Christie
• Knives Out
• The Thursday Murder Club
• Everyone in My Family Has Killed Someone

Book Details

Title: Everyone in This Bank Is a Thief

Series: Ernest Cunningham Mysteries

Book Number: Book 4

Author: Benjamin Stevenson

Format: Paperback (Large Print)

Genre:

• Mystery
• Crime Fiction
• Thriller
• Humorous Mystery

Pages:
512

Publication Date:
March 17, 2026

Dimensions:
8.9 × 6 × 1.4 inches

Large Print:
Yes

Series Reading Order

1. Everyone in My Family Has Killed Someone
2. Everyone on This Train Is a Suspect
3. Everyone This Christmas Has a Secret
4. Everyone in This Bank Is a Thief

About the Author

Benjamin Stevenson is an internationally bestselling Australian author and award-winning stand-up comedian. Best known for the acclaimed Ernest Cunningham Mysteries, his novels combine classic Golden Age detective fiction with sharp humor, innovative storytelling, and brilliantly constructed mysteries that have earned praise from readers and critics around the world.