He wrote several books about Jim Morrison and the Doors, including No One Here Gets Out Alive (co-authored with Jerry Hopkins), and the autobiography Wonderland Avenue: Tales of Glamour and Excess.

[citation needed] At eleven, his Jewish-American[2] parents divorced and his mother Harriet moved Danny and his siblings to Westchester, Los Angeles where she lived with a patent attorney who was a harsh disciplinarian.

He attended summer camp near Lakeshore City, California with Todd Fisher, Steven Crane Jr. and sons of golfer Ken Venturi and Don Knotts.

He was also Iggy Pop's manager for a period, and produced his song "Repo Man", before they both ended up in mental hospitals suffering from drug and alcohol addiction.

[3] It was during this time that he was also manager for the L.A based glam/punk band, The Joneses, whose founder and lead singer, Jeff Drake, supplied them with high quality heroin.