The Teeth of the Tiger

In Short

A macabre murder mystery and high-stakes adventure, this 1914 novel follows Don Luis Perenna—the daring alter ego of the presumed-dead master thief Arsène Lupin—as he investigates a string of horrific homicides in Paris. Entangled in the execution of a multi-million-franc estate, Perenna faces a shadowy villain, dubbed "the tiger," who systematically slaughters every heir in the victim's bloodline using horrifying, calculated traps. Blending locked-room puzzle elements, grand-scale melodrama, and military action, the book has endured as a classic showcase for Lupin's theatrical brilliance, boundless confidence, and relentless thirst for justice.

The Story

The drama begins at the Paris police headquarters, where Inspector Vérot arrives in a state of sheer panic. He carries terrifying news regarding the vast estate of the late Cosmo Mornington, warning that a mysterious conspiracy threatens to wipe out every claimant in line. Before Vérot can fully explain his discoveries to the Prefect of Police, he is poisoned. His ominous predictions come true almost immediately: Hippolyte Fauville, a chief heir, and his young son Edmond are brutally murdered in their own home under seemingly impossible, locked-room conditions. Suspicion falls heavily upon Fauville’s young widow, Marie, especially after a half-eaten piece of chocolate bearing the bite marks of human teeth is recovered near the crime scene.

Stepping into the fray is Don Luis Perenna, a hero of the French Foreign Legion who is secretly none other than Arsène Lupin, having staged his own death years prior. Appointed as an executor of Mornington’s estate, Perenna vows to protect the remaining heirs and unravel the twisted plot. His interference quickly draws the fury of both the Parisian police—who view him as a prime suspect—and the shadowy mastermind orchestrating the killings. A series of lethal traps ensues, including rigged motorcars, planted evidence, and framed crimes, all designed to ruin Perenna or take his life. Along the way, Perenna falls desperately in love with Florence Levasseur, a mysterious woman caught in the web of the conspiracy whose allegiance shifts between Perenna and another chief suspect, Gaston Sauverand.

As the body count rises and Marie Fauville languishes in prison, Perenna relentlessly pursues the truth. He uncovers a diabolical plot of extraordinary hatred: Hippolyte Fauville himself, driven by a terminal illness and monstrous spite, had staged his own murder to frame his innocent wife, while a living villain—the true "tiger"—manipulates the aftermath to claim the entire hundred-million-franc legacy. After surviving a harrowing duel, an explosive trap intended to obliterate the police force, and a mock execution in an subterranean well, Perenna tracks the killer to an old, ruined garden where Florence is held captive. Using his legendary ingenuity and physical prowess, Lupin subdues the culprit, rescues Florence, clears the innocent, and secures his own grand redemption.

How It Unfolds

The fatal warning Inspector Vérot rushes to the Prefect of Police with news of a plot against the Mornington inheritance, leaving behind a mysterious box containing a bitten piece of chocolate before he is murdered. Don Luis Perenna inspects the clues and warns the police that the inspector was targeted by a cold, calculating killer.

The nightmare at the boulevard Perenna and Sergeant Mazeroux keep watch inside the Fauville residence, but despite their vigilance, Hippolyte Fauville and his son are found dead in a sealed room. Suspicion immediately falls upon Marie Fauville when a turquoise ring and incriminating bite marks are linked to her.

A duel and a planted clue Attacked by the press and under constant police surveillance, Perenna fights a duel to defend his honor, carefully wounding his opponent just enough to silence him. Upon returning home, he discovers hidden notes indicating that his enemies are manipulating events from within his own household.

The trap closes on Perenna Deputy Chief Weber and the police repeatedly attempt to implicate Perenna by finding planted evidence, including the broken handle of an ebony walking-stick inside his home. Perenna uses his sharp wit and intimate knowledge of police procedure to continually baffle the Prefect and delay his own arrest.

The confession of a desperate lover Gaston Sauverand reveals the truth behind his frantic flight, explaining how Florence Levasseur saved him and asserting Marie Fauville's complete innocence. Realizing the depth of the deception, Perenna vows to uncover the master brain driving all the heirs to their deaths.

The bomb in the sanctuary Perenna warns the Prefect of Police that a timed explosive has been set to detonate inside the murder house, convincing the skeptical authorities to evacuate minutes before the building is blown to pieces.

The final confrontation at the well The villain lures Perenna into a deadly trap, dropping him down a dark well where he is meant to perish. Lupin uses a secret recess in the masonry to escape unharmed, ambushes the killer, rescues Florence Levasseur from an old ruined grotto, and brings the tragic ordeal to an end.

The People

• Don Luis Perenna (Arsène Lupin): The brilliant, theatrical master-burglar operating under the guise of a decorated Foreign Legion hero. He seeks to protect the innocent, solve the Mornington murders, and win the heart of Florence, ultimately emerging victorious through sheer willpower and tactical genius.
• M. Desmalions: The Prefect of Police in Paris. A cautious, pragmatic official who is torn between his deep suspicion of Perenna's shadowy identity and his reluctant reliance on Perenna's extraordinary investigative insights.
• Florence Levasseur: A courageous, enigmatic young woman entangled in the murder plot. Courted by Perenna and pursued by the killer, her true motives remain hidden until she is rescued from the brink of execution.
• Sergeant Alexandre Mazeroux: A devoted police detective and former accomplice of Lupin. He finds himself perpetually caught between his official duty to the department and his absolute, unshakeable loyalty to his former chief.
• Hippolyte Fauville: A sickly, deeply bitter man whose tragic household becomes the epicenter of the slaughter. His unyielding malice sets the entire monstrous tragedy in motion.
• Gaston Sauverand: A frantic, desperate heir to the fortune who goes to extreme lengths—including murder and escape—to protect Marie Fauville, the woman he loves.
• Deputy Chief Weber: A tenacious, hot-headed police official driven by a personal vendetta to arrest Perenna and avenge his department's repeated humiliations.

In Its Own Voice

"I presume that, after writing his report at a table in the Café du Pont-Neuf and closing it, he had a moment of inattention during which somebody substituted for his envelope another with the same address, but containing a blank sheet of paper."

Don Luis Perenna coolly deduces how Inspector Vérot was outwitted by an unseen enemy before the police even realize a murder has occurred.

"A burglar? I admit it. A swindler? I don't deny it. He was all that. But he was something more than that."

Reflecting on his past deeds in quiet retirement, Lupin offers a candid, self-aware assessment of his own legendary career.

"And, on the other hand, what a host of good actions! What countless proofs of disinterested generosity!"

Lupin defends his life's balance sheet, insisting that his grand adventures ultimately served a higher, noble purpose.

What It's Really About

Underneath its melodramatic twists and locked-room puzzles, the novel explores the terrifying lengths to which human malice and greed can stretch when supercharged by extreme wealth. It contrasts two distinct forms of deviance: the cold, spiteful cruelty of a vengeful mind willing to destroy its own kin, and the romantic, principled criminality of Arsène Lupin, who operates by an internal moral code. The story questions whether justice can truly be served through rigid bureaucratic police work alone, arguing instead that defeating extraordinary evil requires an equally extraordinary mind—one unburdened by conventional rules, driven by vitality, and capable of seeing through the darkest masks of human nature.

Why Read It Today

This novel is a treat for lovers of classic golden-age mysteries, grand Parisian adventure, and larger-than-life heroes. Reading it feels like stepping into a fast-paced early twentieth-century stage thriller filled with secret passages, poisoned chocolates, midnight pursuits, and impossible locked-room puzzles. What makes the book truly memorable is the magnetic presence of Arsène Lupin himself; his unshakeable optimism, sharp wit, and flair for the dramatic make every scene dynamic and entertaining.

Modern readers should be prepared for the dramatic conventions of its era, including sensational plot twists, romanticized melodrama, and occasional period attitudes regarding empire and foreign military exploits. The narrative moves at a relentless, serial-style pace that leaves little room for slow exposition. For anyone who delights in watching an impossibly clever protagonist outsmart both the police and a ruthless villain, this book remains a thrilling, highly enjoyable classic.