After arriving in Rom in 1965 Marisa Mell got to know Heidi Brühl on the party circuit and through mutual friends like Helmut Berger. They soon became very good friends and had a lot of fun during the parties. During her stay in Rome and Italy, Heidi Brühl never made an Italian movie. It was enough to be the wife of the actor Brett Halsey. In 1970, Heidi Brühl was diagnosed with stomach cancer but she survived after surgery and in the same year Brett Halsey took his wife with him back to the USA. In Las Vegas at the Dunes Hotel she did a concert series with Sammy Davis Junior for 1 year. On TV in 1972 she did a episode of the crime series "Colombo" with Peter Falk. In 1976, the romance was over. Brett Halsey stayed in the USA, Heidi Brühl came back to Germany in 1977 to start het own music publishing company. In 1981 and 1982 her singing career took off again and she had again some modest success in the music business. This time her songs were in English and not in German.
Although Heide Brühl left Italy to live in the USA, and then after the divorce returning back to Germany, she still kept in touch with Marisa Mell. So it was only natural that when the book was being published to send her friend a copy of it with a special dedication for Marisa Mell.The text in the book reads: "Liebe Marisa! Herzliche Grüsse. Deine Heidi Brühl". (Dear Marisa! Best wishes, your Heidi Brühl)
In 1991, Heidi Brühl was again diagnosed with cancer, this time breast cancer. Again she needed surgery but now she did not survive and died on the operating table on June 8th 1991, several months before the death of Marisa Mell on May 16th 1992.