In this book The Ultimate Alien Agenda, Dr. Walden goes where no abduction author has gone before. Walden ventures into such realms as proposing that we are the aliens and they are us.

Early in the book, Walden describes a hypnosis session where he sees an alien emerge from his body. Much to his surprise, Walden found that his astral body looked like an alien's body.

Aliens eat human embryos like caviar according to Walden. He also claims that aliens dismember humans for food or other bizarre experiments, thus supporting his claim that earth is a farm for aliens. His claims are reminiscent of those made in the alleged Dulce papers. Despite the negatism, the author believes the aliens are here to save us from ourselves. 

Walden also contends that all abductees are alien hybrids. During an abduction, the body temperature is lowered. There are side effects from having contact with aliens which he describes. Some of these include leg cramps and feeling cranky.

Walden speculates that mankind is not evolved from apes, but rather from reptiles! He actually presents a compelling argument for these cold-blooded critters.

The author explores death and spirits as an inter-dimensional process. He also claims the aliens can remove sperm from the astral body.