G. Baxter & Flint, Private Investigators, are two of the best who seldom turn away clients who come to them for help. But when Georgina Baxter takes on a psychopath as a client, she gets more than she bargained for and ends up fighting for her life.

Joseph Flint, her partner in the firm, is persuaded to take on a client who he thinks is delusional, a man seeing aliens and flying saucers every time there's a full moon.

Flint doesn't believe in UFOs but he investigates regardless, and what he finds out is mind boggling, unbelievable.