Authors: Jeremy Robinson & Sean Ellis
CALLSIGN: KING - Book 1 The fabled Elephant Graveyard has been discovered. It contains enough ivory to make Ethiopia a wealthy nation. But the cave contains more than physical riches--it also holds the means to control the world. Fifteen scientists enter the cave. Only one leaves.
Jack Sigler, Callsign: King (field leader of the covert, black ops Chess Team) receives a cryptic text from Sara Fogg, his girlfriend and CDC "disease detective". A catastrophic disease has been reported in Ethiopia's Great Rift Valley, but Fogg suspects something more is going on. Her suspicion is confirmed when King's arrival in Africa is met by a high speed assassination attempt.
As King fights against two competing, high-tech mercenary forces, each struggling for control of the deadly discovery, Fogg disappears. Working with the surviving member of the science team that made the discovery, King begins a search for Fogg and the source of the potential plague that takes him back to the Great Rift Valley, back to the Elephant Graveyard, and brings him face-to-face with modern man's origins.
PRAISE FOR THE JACK SIGLER THRILLERS
"Rocket-boosted action, brilliant speculation, and the recreation of a horror out of the mythologic past, all seamlessly blend into a rollercoaster ride of suspense and adventure." -- James Rollins, New York Times bestselling author THE DEVIL COLONY
"With THRESHOLD Jeremy Robinson goes pedal to the metal into very dark territory. Fast-paced, action-packed and wonderfully creepy! Highly recommended!" --Jonathan Maberry, NY Times bestselling author of ROT & RUIN
"Jeremy Robinson is the next James Rollins" -- Chris Kuzneski, NY Times bestselling author of THE SECRET CROWN
"If you like thrillers original, unpredictable and chock-full of action, you are going to love Jeremy Robinson..."-- Stephen Coonts, NY Times bestselling author of DEEP BLACK: ARCTIC GOLD
JEREMY ROBINSON is the international bestselling author of fifty novels and novellas including MIRRORWORLD, XOM-B, ISLAND 731, SECONDWORLD, RAGNAROK, PROJECT NEMESIS, THE ANTARKTOS SAGA and the exciting Jack Sigler thriller series. His novel PROJECT NEMESIS, is currently being adapted as a comic book series, and his Jack Sigler thrillers were recently optioned for film. Robinson is also known as the #1 Horror writer, Jeremy Bishop, and the master of post-apocalyptic fiction, Jeremiah Knight. His novels have been translated into twelve languages. He lives in New Hampshire with his wife and three children.
Sean Ellis has authored and co-authored more than two dozen action-adventure novels, including the Nick Kismet adventures, the Jack Sigler/Chess Team series with Jeremy Robinson, and the Jade Ihara adventures with David Wood. He served with the Army National Guard in Afghanistan, and has a Bachelor of Science degree in Natural Resources Policy from Oregon State University. Sean is also a member of the International Thriller Writers organization. He currently resides in Arizona, where he divides his time between writing, adventure sports, and trying to figure out how to save the world.