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Lucas is a 1986 American teen tragicomedy film directed by David Seltzer and starring Corey Haim, Kerri Green, Charlie Sheen and Courtney Thorne-Smith. This was Haim's breakout role that lead to his stardom. He was nomination at the Young Artist Awards for his work in this film. 
Lucas Bly (Haim) is an extremely intelligent and nerdy 14-year-old high school student. He soon becomes acquainted with Maggie (Green), an attractive older girl who had just moved to town. After meeting Lucas on one of his entomological quests, Maggie befriends him, spending time with him during the remainder of the summer until school begins. Lucas, who finds himself a frequent victim of bullying and teasing, has a protector of sorts, Cappie Roew (Sheen), a fellow student and football player; Cappie was once one of Lucas' tormentors, until Cappie contracted hepatitis and Lucas brought him his homework every day, ensuring that Cappie didn't fail and have to repeat a year of school. Even though Lucas deems it beneath her, Maggie becomes a cheerleader for the football team in order to get closer to Cappie, on whom she has a growing crush. Angered and offended by Maggie continuing to ignore him, Lucas begins to irritate Maggie, continuing to castigate her cheerleading as "superficial" and making the incorrect assumption that she will be his date to an upcoming school dance. Maggie complains to Lucas that she's interested in things besides just hanging out with him all the time, and Lucas' unrequited affection for her continues to upset him.
Everything changes on the night of the dance when Cappie is dumped by his girlfriend Alise (Thorne-Smith), who has noticed his budding attraction to Maggie. A depressed Cappie finds comfort with Maggie at her house—much to the chagrin of Lucas, who has arrived, in tuxedo, to pick her up for the dance. Even though Cappie and Maggie invite him out for pizza, he rudely rebukes them and rides off on his bike. Rina (Ryder), Lucas' best female friend, encounters him as he sits by a lake, looking at the dance festivities on the other side. Even though she has obvious feelings for him, Rina consoles Lucas as he frets about him and Maggie being "from two different worlds". Meanwhile, Cappie and Maggie are out for pizza alone. From afar, Lucas happens to be riding by and witnesses their first kiss. Shattered, Lucas takes drastic action the next day.
In a last-ditch (and misguided) attempt to impress Maggie and gain the respect he so desperately craves, the diminutive Lucas joins the football team. In the shower after practice, Lucas endures perhaps the worst prank yet from his constant tormentors Bruno (Tom Hodges) and Spike (Jeremy Piven). At the end of that day, Maggie chases Lucas, who flees in embarrassment due to the torture inflicted on him, to his favorite hiding place (beneath a railroad overpass) to talk with Lucas. After she tells him with kindness that she wants him to be her friend, Lucas tries to kiss Maggie. Maggie backs away bemusedly, and a heartbroken Lucas screams at her to leave.
The next day, Lucas, still reeling, removes his helmet during his first football game (the uniform was too big for him) and is severely injured, requiring hospitalization. Maggie, Cappie, and Rina attempt to contact Lucas' parents, though Maggie discovers that she does not know Lucas as well as she thought she did. Correcting Maggie's misguided impression that Lucas lives in a large luxurious house she has seen him at several times before, Rina shows the pair that Lucas lives in a dilapidated trailer with his alcoholic father and works as a gardener at the large house where Maggie had visited him previously.
Meanwhile, Lucas' schoolmates hold a vigil in the hospital for him as he recuperates. Maggie visits Lucas' room that evening and sternly tells him never to play football again. Lucas promises, and the two reconcile, picking up their close friendship where they left off. They speculate as to where they will be when the locusts return seventeen years later, with locusts being one of the many scientific things Lucas introduced Maggie to during their summer together; both express the hope that they will still be friends when the locusts return again.
Lucas returns to school a short time later, with schoolmates all casting surprised looks at him as he walks through the hall. Many talk amongst themselves about what he did on the football field, and how the jocks at school likely have it out for him now. Upon reaching his locker, he finds Bruno and Spike waiting for him. Thinking it'll just be the same old story, Lucas tries to ignore them as he opens his locker. Inside is a varsity letter jacket, emblazoned with Lucas' name and number (72) on the back. As Lucas takes it out in shock, Bruno starts the "slow clap", and the entire hallway starts applauding. Maggie, Cappie, and Rina are all there, too, leading the applause as Lucas raises his arms triumphantly and smiles. 
Corey Haim was born in Toronto, Ontario, to Judy Haim, an Israeli-born data processor, and Bernie Haim, a Canadian-born clothing sales representative. He has a sister, Carol, and a half-brother, Daniel. 
In 2011 his fellow actor, friend, and biographer, Corey Feldman claimed that a "Hollywood mogul" who had sex Haim during the filming of Lucas was to blame for his death. In the 2013 celebrity "Tell-All" book by Corey Feldman, Coreyography, he describes the sexual abuse he and Haim suffered as young actors in the film industry. The book gives details that during the filming of Lucas, Haim "allowed himself to be sodomized," and "had been tricked into engaging in a session of anal sex by a man on the movie set. The man supposedly told Haim that sex between men and boys was normal in Hollywood, saying that "all the guys in the entertainment world do it." Later according to Feldman, Haim repeatedly proposed the idea that the two of them should be engaging in sex with each other as well. Feldman turned him down each time. Feldman's book also suggests that later in his teens, Haim would seek out older men for the purpose of having sex with them. "Feldman says in "Coreyography" that he introduced an underage Haim to those men because he just wanted Haim to stop pestering him about finding someone to have sex with him. Feldman also says that Haim willingly had sex with these men and often insisted on it."  Rumors have persisted that Haim's sexual encounter during the filming of Lucas was with Charlie Sheen,, a claim that Sheen denied in 2017. 
The following year after Lucas, Haim had a featured role in Joel Schumacher's 1987 vampire film, The Lost Boys, which also starred Kiefer Sutherland and Corey Feldman. The film was a popular hit, and critics gave Haim another Young Artist Award nomination for his performance. Haim was also launched firmly into the realm of the teen heartthrob, as was his co-star Corey Feldman, who he would go on to star with in seven separate films and with whom Haim would cultivate a lifelong friendship.
Corey Haim died on March 10, 2010 due to respiratory failure and complications from pneumonia and his death was ruled by the L.A. County Coroner's office as a "natural death".  He was 38 years old.
Carlos Irwin Estévez (born September 3, 1965), known professionally as Charlie Sheen, is an American actor. Sheen's personal life has made headlines, including reports of alcohol and drug abuse and marital problems, as well as allegations of domestic violence. His contract for Two and a Half Men was terminated by CBS and Warner Bros. in March 2011. Sheen subsequently went on tour. On November 17, 2015, Sheen publicly revealed that he was HIV positive, having been diagnosed about four years earlier. As reported by The National Enquirer on November 8, 2017, actor Dominick Brascia accused Sheen once again of having sex with the then 13-year-old Corey Haim during the filming of Lucas, an allegation which Sheen denies.  According to Brascia, "When Corey wanted to fool around again, Charlie was not interested.” 
- Lucas (film) from Wikipedia
- Corey Haim Biography (IMDb)
- Sieczkowski, Cavan. "Corey Feldman Details Horrific Sexual Abuse In New Memoir", Huffington Post, October 21, 2013.
- Corey Feldman details abuse, Corey Haim's bisexuality in 'Coreyography' memoir
- Charlie Sheen 'absolutely denies' claims he sexually assaulted 13-year-old Corey Haim
- "Corey Haim died of pneumonia complications, coroner rules", New York Post, May 4, 2010. Retrieved on May 5, 2010.
- Charlie Sheen (Worth $70 Mil?) Will Donate $8.4 Thousand to Japan Relief. Showbiz411. Retrieved on August 18, 2011.