Colorado Parks & Wildlife Research Library

When Dryer and Danforth set out to explore the Antarctic continent, they encounter a strange civilization that traveled to Earth from the far regions of space millions of years ago, and now Dryer and Danforth are sent to be Earth's ambassadors to space.

"Darkness has descended on the Shadowhunter world. Chaos and destruction overwhelm the Nephilim as Clary, Jace, Simon, and their friends band together to fight the greatest evil they have ever faced: Clary's own brother. Nothing in this world can defeat Sebastian, but if they journey to the realm of demons, they just might have a chance." --

When seventeen-year-old orphaned shapechanger Tessa Gray is kidnapped by the villainous Mortmain in his final bid for power, the London Institute rallies to save her, but is beset by danger and betrayal at every turn.

While searching for the place where the angels fell to earth to stop Lucifer from erasing the past, Luce and Daniel make a startling discovery about their love.

After the suspicious death of her mother in 1895, sixteen-year-old Gemma returns to England, after many years in India, to attend a finishing school where she becomes aware of her magical powers and ability to see into the spirit world.

Tory Brennan is the leader of a band of teenage 'sci-philes' who live on an island off the coast of South Carolina and when the group rescues a dog caged for medical testing, they are exposed to an experimental strain of canine parvovirus that changes their lives forever.

At Baskerville Hall on the grim moors of Devonshire, a legendary curse has apparently claimed one more victim. Sir Charles Baskerville has been found dead. There are no signs of violence, but his face is hideously distorted with terror. Has the spectral destroyer struck again? More important, is Sir Henry Baskerville, younger heir to the estate, now in danger? Enter Sherlock Holmes, summoned to protect Sir Henry. As Holmes and Watson begin to investigate,...

In the long-awaited sequel to Fablehaven, the dragons who have been kept at the dragon sanctuaries no longer consider them safe havens, but prisons and they want their freedom. The dragons are no longer our allies....
In the hidden dragon sanctuary of Wyrmroost, Celebrant the Just, King of the Dragons, plots his revenge. He has long seen the sanctuaries as prisons, and he wants nothing more than to overthrow his captors and return the...

High school sophomore Nora has always been very cautious in her relationships, but when Patch, who has a dark side she can sense, enrolls at her school, she is mysteriously and strongly drawn to him, despite warnings from her best friend, the school counselor, and her own instincts.

Fifteen-year-old Josh has chosen to side neither with his twin sister Sophie nor with the Alchemyst, Nicholas Flamel, but rather to fight alongside Dr. John Dee and the mysterious Virginia Dare, while the immortal Machiavelli and Billy the Kid follow the Elders' plans to set loose the monsters of Alcatraz on San Francisco and trigger the end of the humani race.