A missing witness. A global crime ring. No good leads. Can Detective Callahan solve the case before it's too late? Detective Callahan faces her most challenging case yet. She is pregnant with her first child and assigned to desk duty with firm orders to stay off the street. Five years after the...

A mother. A detective. A case that could cost her everything. When Detective Callahan's instincts scream that a suicide is actually murder, she knows there's more at play—especially when the victim's employer is tied to international smuggling. Uncovering the truth will put her life at risk...

A honeymoon cruise turns deadly when a detective uncovers a sinister plot aboard a luxurious ship. Mysterious deaths plague a luxury cruise ship as it sails from Singapore to Sri Lanka with only two hundred wealthy passengers. With the ship's security seemingly powerless to investigate and the...

A desperate rescue. A war-torn land. A love that refuses to die. Detective Bernadette Callahan's impulsive nature has landed her in hot water before, but this time, the stakes are higher than ever. A heated argument drives her fiancé to take a dangerous security job in Afghanistan. When he...

A shocking attack. A long-lost uncle. Sinister links to ancient Irish Folklore. When an Irish priest narrowly escapes an attempt on his life at a remote Canadian Seminary, Detective Bernadette Callahan finds herself entangled in a mystery that hits unexpectedly close to home. As Callahan delves...

A deadly virus. A determined detective. A race against time to save the world. In this gripping thriller, Detective Bernadette Callahan faces an industrial accident that defies explanation. When she delves into the bizarre death, a terrifying revelation emerges: a virus that attacks both metal...

A race against time. A detective pushed to her limits. The fate of the world hangs in the balance. Detective Bernadette Callahan embarks on a journey to find the one man who might hold the key to North America's climate crisis. From the depths of an undersea lab off Florida's coast and the lakes...

Two countries. Two murders. A detective about to risk everything. When two killings take place thousands of miles apart in Canada and Alaska, Detective Bernadette Callahan's instincts tell her there's a link. But her superiors disagree, and they move to silence her. Undeterred, Callahan delves...