James Darren, the former teen idol and pop singer who played the dreamy surfer Moondoggie in three Gidget movies before starring on television on The Time Tunnel and T.J. Hooker, died Monday. He was 88.

Darren died in his sleep at Cedars-Sinai Medical Center in Los Angeles, his son Jim Moret, a correspondent for Inside Edition, told The Hollywood Reporter. He had entered the hospital for an aortic valve replacement but was deemed too weak to have the surgery; he went home but had to return.

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“I always thought he would pull through,” Moret said, “because he was so cool. He was always cool.”

Early in his career, the dark-haired Darren received excellent notices for starring in Let No Man Write My Epitaph (1960) — portraying the son of a hoodlum defended by Humphrey Bogart’s character in 1949’s Knock on Any Door — and for playing the Greek soldier Spyros Pappadimos in The Guns of Navarone (1961).

Even though he could not surf, the Philadelphia native got the role of Moondoggie (real name: Jerry Matthews) opposite three actresses as the precocious Malibu teen: Sandra Dee in Gidget (1959), Deborah Walley in Gidget Goes Hawaiian (1961) and Cindy Carol in Gidget Goes to Rome (1963). 

Darren revived his singing career in the late ’90s when he appeared on several episodes of the syndicated series Star Trek: Deep Space Nine as the holographic lounge singer Vic Fontaine, a role he called “one of the most enjoyable” he ever played.

Several of his Frank Sinatra-styled performances were recorded for the 1999 album This One’s From the Heart.

After many years out of the limelight, Darren made an impression as the husband of a bar owner in Harry Dean Stanton‘s final film, Lucky (2017).

James William Ercolani was born on June 8, 1936. Growing up on South 10th Street in South Philadelphia, he was inspired by another Philly native, Eddie Fisher, to become a singer and actor, and he commuted to New York to study acting with Stella Adler.

While in the city, the owner of a photography shop connected him to Columbia Pictures talent scout Joyce Selznick (David O. Selznick’s niece), and he went on to sign a contract with the studio.

Darren made his film debut as a high school senior and gang member opposite Robert Blake in the crime drama Rumble on the Docks (1956), then followed with roles in Operation Mad BallThe Brothers Rico and The Tijuana Story in 1957 and Gunman’s Walk in ’58. 

The Gidget movies made him extremely popular with young ladies. 

“The defining moment was when I was at a studio in San Francisco and word got out that I was there,” he recalled in a 2015 interview with Los Angeles magazine. “Thousands of girls were screaming out front. When I had to leave the building, they tackled me to the ground and pulled pieces of my hair out. The police had to rescue me and took me to the roof until things settled down.”

To land the Gidget gig, Darren had to convince the producers that he could carry a tune. “They were going to use somebody else’s voice, but I told them I could sing,” he said. “We went into one of the soundstages with a piano player and I sang the song and they said, ‘He can do it.’ Then they put me on their label, Colpix.”

Darren also was heard performing in All the Young Men (1960), Diamond Head (1962), Under the Yum Yum Tree (1963) and For Those Who Think Young (1964).

He sang “Almost in Your Arms” at the 1959 Academy Awards and “It’s a Mad Mad Mad Mad World” on the 1964 Oscar telecast; performed as Yogi Bear in a 1964 animated film; and did a number on a 1965 episode of The Flintstones.

He also played the best friend opposite Sal Mineo in The Gene Krupa Story (1959), starred as a car mechanic in The Lively Set (1964) and ventured to Italy to topline Venus in Furs (1969) with Barbara McNair.

Darren was married to childhood sweetheart Gloria Terlitsky from 1955 until their 1958 divorce and to Evy Norlund, a former Miss Denmark, from 1960 until his death. He lived for decades in a home on Kimridge Road in Beverly Ridge Estates that had been owned by Audrey Hepburn.

In addition to his wife and Moret, survivors include his other sons, Christian and Anthony; grandchildren Amanda, Carly, Matthew, Natalie and Nicholas; and goddaughter A.J. Lambert, daughter of Nancy Sinatra.

Over the years, Darren encountered many fans of his music, some of them unexpected.

“I was in a pizza shop one day with a friend of mine. I heard this motorcycle pull up, and in walked Bruce Springsteen in his little motorcycle cap, like Brando wore in The Wild One — I guess he left his helmet outside,” he recalled in his chat with Weaver. “I said, ‘Oh, I gotta go say hi to him.’

“I walked up to him and said, ‘Hi, I don’t want to interrupt you, but my name is James Darren. I just want to tell you I’m a big fan. I love all your stuff.’ And he said, ‘James Darren? I bought “Goodbye Cruel World” in Freehold, New Jersey.’ Isn’t that sweet?”

–Duane Byrge contributed to this report

This article was originally published by The Hollywood Reporter.