A popular support actress during the 1960s in movies such as If A Man Answers, Experiment in Terror and The Young Interns, Stefanie Powers played Troy Donahue's love interest in the zany teen flick Palm Springs Weekend in 1963.
However, her greatest claims to fame occurred much later as the popular co-star of tv's Hart to Hart (1979-84), and as the long-term companion of Hollywood superstar, William Holden, who she never married but with whom she shared a passion for the protection of wild animals.
Stefanie is one smart cookie. She speaks no less than six languages - English, Polish, Spanish, French, Italian and Swahili - and is president of The William Holden Wildlife Foundation.
Gorgeous brunette Suzanne Pleshette (she with the husky voice) was Troy Donahue's co-star in two movies and one very brief marriage.
Theater provided Suzanne with her first professional acting experience, but she broke into films when Jerry Lewis signed her for The Geisha Boy in 1958.
From that time on, Suzanne balanced movie acting with broadway and television appearances, receiving Emmy nominations and top reviews for much of her work. Her success continues to this day.
In the first half of the '60s, Suzanne and Troy sizzled romantically on screen in Rome Adventure and A Distant Trumpet, a relationship that spilled over into real life. They married early in 1964, but were divorced after only nine months. According to Suzanne there was no acrimony.
"Troy was a sweet, good man," she recalled in one interview. "We just were never destined to be married. We just didn't have the same values. But I'm not bitter. He taught me to laugh."
The daughter of a vaudeville artist and a Ziegfield Girl, Valerie Allen danced in Vegas chorus lines during the mid 1950s. She was contracted to Paramount for several movies between 1956 and 1959, including Pillow Talk and The Five Pennies.
A Suzanne Pleshette/Ava Gardner lookalike, Valerie played a support role in the Troy Donahue movie Come Spy With Me in 1966, and then married Troy the same year. They divorced in 1968 after doing various theater productions together.
Valerie later became an executive at RCA, scripted soap operas, and worked as a cruise ship social director. In 2002 she wrote a novel set in Hollywood.
Respected mezzo-soprano Zheng Cao was Troy Donahue's co-star-in-life from October 1991 until his death a decade later. He described her as his "talented, beautiful girlfriend" and indicated that their relationship had brought him great happiness.
Born in China, Zheng Cao holds degrees from the Shanghai Conservatory and the Curtis Institute of Music.
While studying, she worked as a singer on the Holland America cruise line where she met Troy, who was running acting seminars on the same ship. Reports suggest that they travelled widely together from that time on.
"We're very serious, very committed to each other. It's the greatest relationship I've ever had in my life," said Troy in July 1998. "And to come at a time like this in a way that it's all happening, it's a dream."
Zheng Cao's extensive professional credits include performances with the San Francisco Opera, the San Francisco Ballet, the Grand Theatre de Geneve, Cincinnati Opera, Pittsburgh Opera, San Diego Opera, Opera de Lyon and New York City Opera in productions such as Die Walküre, Rusalka, Salome, Elektra, Le nozze di Figaro, Madama Butterfly, Idomeneo , Parsifal, The Rake's Progress, The Aspern Papers, Faust and Don Giovanni.