The action picks up where The Jekyll Island Chronicles (Book Two): A Devil's Reach left off: the cabal of anarchists, known internationally as Zeno, have stolen the plans to a Nikola Tesla's Death Ray and intend to build it and use it first on the heroes of Jekyll. Meanwhile, Tesla and his contemporaries Charles Proteus Steinmetz and Henry Ford work against the clock to come up with an improbable chance to render the weapon useless. For their biggest challenge yet, our heroic regulars -- mechanically-limbed Peter Karovik, electrically-powered Helen Huxley, high-flying Billy Colfield, and the brilliant cryptologist Solomon Taylor -- must build an army of new heroes that join the battle royale on the tiny Georgia island of Jekyll. With more thrilling science-heroism than ever before, A Last Call completes the Jekyll Island trilogy as the forces of good stand up one last time against those seeking to burn the world.