Books like Mysterious Millionaire by Cassie Miles

A daring millionaire struggles with temptation when he meets a mysterious woman who keeps her own secrets. Their one-night affair turns into a passionate exploration of desire, trust, and the hidden costs of love.

Jack Dalton, battling amnesia after surviving the Rocky Mountains, finds solace with Caitlyn Morris in a remote cabin—until armed men threaten their peace, forcing him to confront a forgotten past and protect a woman he can’t forget.

A Texas woman's secret baby puts her in a world of danger and suspense in this romantic thriller.

After a fatal airline crash, copilot Bailey Fielding faces the mystery of her possible involvement while both she and FAA investigator Joe Rivers navigate a forbidden romance, raising questions of truth and justice.

In a high‑stakes treasure hunt, Kate Deane races from Denver to Alabama and Las Vegas to recover a gold inheritance, while rival seekers like RJ Pardee stalk her—turning a game of hide‑and‑seek into a deadly pursuit.

Private investigator Patrick O'Brien of the Colby Agency confronts a mystery when a woman named Sande Williams wakes up in a morgue, amnesic and surrounded by a trail of murders that may implicate her in an elaborate identity scheme.

After her husband’s murder, ex‑cop David Delgado aids Spencer Huntington in uncovering the killer, forcing them to confront a simmering attraction and Miami’s hidden dangers.

During a Colorado Christmas, investigative lawyer Cody Berringer teams up with businesswoman Rue Harris to uncover a killer’s motives, unravel a family mystery, and face unexpected danger and attraction.

Auntie Maggie, Uncle Louie, and the 4th of July: A Family Adventure Novel

A cop and nurse's romance under fire, caught in a web of violence and danger.

A woman finds herself unexpectedly drawn to a wealthy man who offers to become her husband in exchange for raising and caring for his child. When the billionaire proposes to share custody, Becky Taylor must decide if she can truly give him everything he asks in return.

Renegade Millionaire, the story of Dr. Rio Madrid, introduced in Kristi Gold's best-selling miniseries, Marrying An M.D....a man so compelling no woman has dared to love him... yet. A stranger's kiss on New Year's Eve had Joanna Blake nearly swooning--the last thing the struggling midwife needed. She never dreamed they'd meet again in a hospital delivery room, where she'd be working at the side of sexy-as-sin Dr. Rio Madrid, and on the verge of accepting his dangerously tempting invitation. When their lips touched at the stroke of midnight, Rio was lost in the sweetest sensual torment he'd ever known. Opening his lavish home to the strapped single mother was just borrowing trouble, for his reluctant Cinderella would soon learn that he was no fantasy prince. Unless Joanna found a way to liberate this rebel healer from his lonely life and free his heart to love....

Private investigator Dane Whitelaw faces a deadly conspiracy when the body of his former lover, Sheila Warren, is found in the Florida Keys, implicating him in a serial killer's spree. Kelsey Cunningham joins the hunt, forcing secrets and dangerous liaisons into the open on Hurricane Bay.

An engaging American romance that follows the emotional journey of a woman who falls for a man of immense wealth.

When Sara Douglas returns to Cape Darkwood to investigate her parents’ murder, she is drawn into a tense reunion with Nick Tyson—now chief of police—whose own past and the town’s buried secrets set the stage for a dangerous love and a looming threat.