Detective Gus Collier and his ghostly partner Dr. Sarah Allen are investigating the murder of a prominent Portland businessman when his ghost gives them some startling news. Before his untimely death, the man was an immortal (well… almost!) alchemist, and he's carrying an important secret to his grave. Will the crime-fighting duo manage to discover the motive, find the murderer, and protect other innocent lives? This may turn out to be one of Gus and Ghost's most fascinating cases!