Kristofer Engelhardt to Hollywood Vampires in 5 Steps
- Kristofer Engelhardt wrote Beatles Undercover
- Beatles Undercover includes a chapter on Harry Nilsson
- Harry Nilsson produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation was produced by Ringo Starr
- Ringo Starr was a member of the original Hollywood Vampires