The Borgia Dagger (1988)
by Franklin W. Dixon
(#13 in The Hardy Boys Casefiles)

Dead on Target

Evil, Inc.

Cult of Crime

The Lazarus Plot

Edge of Destruction

The Crowning Terror

Deathgame

See No Evil

The Genius Thieves

Hostages of Hate

Brother Against Brother

Perfect Getaway

The Borgia Dagger

Too Many Traitors

Blood Relations

Line of Fire

The Number File

A Killing in the Market

Nightmare in Angel City

Witness to Murder

Street Spies

Double Exposure

Disaster for Hire

Scene of the Crime

The Borderline Case

Trouble in the Pipeline

Nowhere to Run

Countdown to Terror

Thick as Thieves

The Deadliest Dare

Without a Trace

Blood Money

Collision Course

Final Cut

The Dead Season

Running on Empty

Danger Zone

Diplomatic Deceit

Flesh and Blood

Fright Wave

Highway Robbery

Last Laugh

Strategic Moves

Castle Fear

In Self-Defense

Foul Play

Flight into Danger

Rock &#039;n&#039; Revenge

Dirty Deeds

Power Play

Choke Hold

Uncivil War

Web of Horror

Deep Trouble

Beyond the Law

Height of Danger

Terror on Track

Spiked!

Open Season

Deadfall

Grave Danger

Final Gambit

Cold Sweat

Endangered Species

No Mercy

The Phoenix Equation

Lethal Cargo

Rough Riding

Mayhem in Motion

Rigged for Revenge

Real Horror

Screamers

Bad Rap

Road Pirates

No Way Out

Tagged for Terror

Survival Run

The Pacific Conspiracy

Danger Unlimited

Dead of Night

Sheer Terror

Poisoned Paradise

Toxic Revenge

False Alarm

Winner Take All

Virtual Villainy

Dead Man in Deadwood

Inferno of Fear

Darkness Falls

Deadly Engagement

Hot Wheels

Sabotage at Sea

Mission: Mayhem

A Taste for Terror

Illegal Procedure

Against All Odds

Pure Evil

Murder By Magic

Frame-Up

True Thriller

Peak of Danger

Wrong Side of the Law

Campaign of Crime

Wild Wheels

Law of the Jungle

Shock Jock

Fast Break

Blown Away

Moment of Truth

Bad Chemistry

Competitive Edge

Cliff-Hanger

Sky High

Clean Sweep

Cave Trap

Acting Up

Blood Sport

The Last Leap

The Emperor&#039;s Shield

Survival of the Fittest

Absolute Zero

River Rats

High-Wire Act

The Viking&#039;s Revenge

Stress Point

Fire in the Sky

Dead in the Water