By Denise Diana Huddle

Anthrax to Zodiac

A Snarky PI Delves into the Most Notorious Unsolved Mysteries of the Past 150 Years 

Biological attacks, kidnappings, hijackings, horrific murders that rocked the nation…
and were never solved.

Reeling from the devastation of 9/11, America anxiously waited for the other shoe to drop. Then the anthrax letters came, branded by the FBI as the worst biological attacks in US history. Despite a lengthy and expensive investigation, no suspect was ever charged.

In 1969, as the first astronaut stepped on the moon and 350,000 Americans flocked to Woodstock, the Zodiac Killer terrorized California residents, claiming his murder victims would be his slaves in the afterlife. Despite one of the longest-running investigations in the state’s history, the killer has never been identified.

Journey back through time from 2001 to 1892 as veteran PI Denise Huddle brings her field-honed investigative skills and trademark snark to bear on seven of America’s most notorious unsolved mysteries. Who mailed the anthrax letters? Who killed JonBenét Ramsay? Who was D.B. Cooper? Who was the Zodiac Killer? Who killed the Black Dahlia? Who really kidnapped the Lindbergh baby? Who killed Lizzie Borden’s parents?

From A to Z, Huddle lays out the events and evidence, identifies patterns, and tests theories. As the mysteries that have haunted America for decades are laid bare, the cases you thought you knew may not be so clear-cut after all.

You be the judge. Who did it?

In the aftermath of the Civil War and Reconstruction, Austin, Texas was booming. The future seemed bright for Austinites, both Black and white—that is until December 30, 1884, when the Servant Girl Annihilator claimed his first victims. The murderer wreaked havoc on the city for a year, killing and mutilating five Black women and one Black man and seriously injuring four other Black residents. On the bloody night of Christmas Eve, 1885, he butchered two white women within an hour of each other and then disappeared into the ether. Despite multiple eyewitnesses to his crimes, the killer was never identified, and the crimes remain unsolved.

Less than three years later, five thousand miles away in the gritty slums of the Whitechapel district of London, Jack the Ripper struck the first time on August 31, 1888, killing Mary Ann Nichols. Over the next seventy days, the Ripper terrorized Whitechapel, claiming four more victims—each more severely mutilated than the last. And just like the Annihilator, his spree culminated in a crescendo of violence with the horrendous murder of Mary Ann Kelly on November 9. Then, as suddenly as it began, the killing stopped, and the murderer vanished into the London fog, never to be captured or punished for his crimes.

Veteran PI Denise Diana Huddle takes a deep dive into these fascinating cases, looking at the context, the victims, the case facts, and the investigations. She analyzes theories of the crimes and considers possible suspects, all in an effort to answer the question:

Who were the first modern serial killers?

By Denise Diana Huddle

Stolen Secrets

Book 1 in the Deadly Secrets Texas Trilogy

An Enemies-to-Lovers Small Town Romantic Suspense Novel

Recipient of the Orange Rose award for Romantic Suspense

Greed. Lies. Corruption. Sarah Chandler must rely on the enemy to save her brother and escape a killer. But will joining forces mean losing her heart…or her life?

Texas rancher Sarah Chandler is having a tough month. First her brother, Stone, goes missing and now an oil company has started drilling on a ranch she manages.

Special Forces veteran Ethan Tanner is not what she expected in a landman for the oil company—intelligent, funny, and gorgeous. And she can’t deny his heroism when he runs through flames to rescue his men. But painful experience has taught her to keep men at a distance.

When they discover a murder victim while investigating sabotage on the ranch, they become the killer’s next targets.

Evading their pursuer in a cross-country car chase, and ending up on the most-wanted list, they search for evidence that could expose the killer…and maybe help them find Stone.

They can’t escape the sexual tension between them. But when Sarah learns the real reason Ethan is helping her out—and the truth about his dark history—their growing connection is tested.

Is she sleeping with the enemy…or could Ethan be her only hope of survival?

By Denise Diana Huddle

Burning Secrets

Book 2 in the Deadly Secrets Texas Trilogy series

An Enemies-to-Lovers Small Town Romantic Suspense Novel

Recipient of the Golden Palm award for Romantic Suspense

Ruthless killers. Deadly deceit. Fiery passion.
She’ll do anything to catch a polluter. He’ll do anything to stop her.

Undercover Texas PI Brock Emerson has one job—to keep chemical engineer Adelaide Reese from shutting down his client’s paper mill. But he had no idea how tempting the beautiful scientist would be. Or how much he’d want to protect her…

Set on proving pollution from the mill is poisoning the local town, Adelaide is making powerful enemies. And when angry mill employees stage a violent attack, Brock can’t help stepping in to save her.

Posing as a journalist, he wins her trust. Then they witness a murder that makes Brock question both his employer and his moral compass…and sends them running for their lives.

When the woman he’s falling for learns he’s been lying to her all along, Brock finds himself in a position he never imagined. Will doing his job cost him his integrity and his heart? Or will they both pay the ultimate price for crossing a master manipulator?

Can love survive their burning secrets?

By Denise Diana Huddle

Buried Secrets

Book 3 in the Deadly Secrets Texas Trilogy series

An Enemies-to-Lovers Small Town Romantic Suspense Novel

Finalist – Put Your Heart in a Book award for Romantic Suspense

Samantha Jordan will bring justice to a cold case victim if it’s the last thing she does…and it just may be. Detective Nick Ballard wants to protect her, but his buried secrets could get them both killed.

When an explosion unearths human remains—and almost lands them in the morgue—historical preservationist Samantha Jordan and San Antonio police detective Nick Ballard reluctantly team up to investigate.

Since the case is as cold as the corpse, Samantha uses the cutting-edge science of genetic genealogy to unravel the dark history of a gruesome unsolved murder and identify the body. But Nick is obstructing her at every turn. Then a targeted hit-and-run and a break-in force them to seek refuge in San Antonio’s forgotten historic sites and underground tunnels.

Despite their differences, Samantha is falling for the jaded detective. And Nick cares for her more than he should. But coming clean about his past—and the reason he’s been dragging his feet during the investigation—could end his career and put his deceased partner’s family in jeopardy.

As the final puzzle pieces fall into place, and Samantha discovers the truth, Nick will have to face his own demons and the corruption rampant in the SAPD to save her from a cunning killer.