Impersonating her twin sister, Allison Leamon falls in love with Annie's fiancé's best friend.

A leading scientist at EchoEnergy, a company seeking a clean, alternative energy source, Sabrina Galloway makes the alarming discovery that an unknown saboteur has tampered with the production process, and risks her life to uncover the truth about a deadly conspiracy.

A brilliant and beautiful scientist and a mysterious special ops soldier must lead a team deep into the Earth on a desperate hunt for the cure to a deadly epidemic.

"The ultimate cure that could heal any disease? Crazy.That's exactly what research scientist Marian Creighton has always believed about her father's quest, even if it does stem from a desire to save her sister Ellen from the genetic disease that stole their mother from them. But when her father falls into a coma after drinking a vial of holy water believed to contain traces of residue from the Tree of Life, Marian must question all of her assumptions....

In Oklahoma, a woman scientist on the verge of a medical breakthrough in genetics becomes the target of a hired assassin. She is Kate Denby, a single mother in her thirties, and the incident leads to her becoming involved romantically with two men. One is a fellow scientist who spirits her away where she can continue her research, the other is the mercenary protecting them.

"When Dr. Emma Sweeney stumbles across the victim of a hit-and-run outside Galway University early one morning, she calls her boyfriend, Detective Cormac Reilly, bringing him first to the scene of a murder that would otherwise never have been assigned to him. The dead girl is carrying an ID that will put this crime at the center of a scandal--her card identifies her as Carline Darcy, heir apparent to Darcy Therapeutics, Ireland's most successful pharmaceutical...

California, 1984. Detective Tony Mendez, fresh from a law enforcement course at FBI headquarters, is charged with discovering the identity of a brutal, calculating psychopath. His search pushes him ever deeper into the lives of three children, and closer to the young teacher whose interest in recent events becomes as intense as his own.

Isabella, Lady Trent, known as the world's preeminent dragon naturalist, writes her memoir detailing how she sought true love and happiness despite her lamentable eccentricities; and of her thrilling expedition to the perilous mountains of Vystrana, where she made the first of many historic dragon discoveries that would change the world forever.