17 Beloved Celebrities Who Went Missing.

#1. Ozzy Osbourne

Ozzy Osbourne went missing in May of 2016, after his wife, Sharon, kicked him out the house for his infidelity. Sharon apparently found out that Ozzy had been hooking up with stylist Michelle Pugh, and banished him from their home. He initially went to the Beverly Hills Hotel, but did not stay long. When his kids, Jack, Kelly, and Aimee, tried to get a hold of him in the days after his fight with Sharon, they could not find him. Friends worried that he might fall off the wagon and turn to alcohol and drugs to cope. One so-called friend even said, "...he is not brilliant on his own and is a bit like a puppy he goes missing but then usually turns up sooner or later."

#2. Chelsea O'Donnell

Chelsea O'Donnell, the 17-year-old daughter of comedian Rosie O'Donnell, went missing for nearly a week in the summer of 2015. Rosie first reported Chelsea missing from their Rockland County, NY area on Sunday, August 16. By Tuesday, there was still no sign of Chelsea, and Rosie turned to social media for help. She posted messages on Twitter and Instagram asking the public for any information they could provide.

By Wednesday, police had located Chelsea. She had been hiding out with a 25-year-old convicted drug dealer named Steve Sheerer. Chelsea met Sheerer on Tinder, and was apparently with him of her own accord.

#3. Sinéad O'Connor

Irish singer and songwriter Sinéad O'Connor went missing on May 15, 2016. At 6am on the morning of Sunday the 15th, O'Connor went for a bike ride around Wilmette, a Chicago suburb. After someone called reporting that O'Connor never returned home, county police issued an alert for the singer.

#4. Nick Stahl

Actor and apparent drug addict Nick Stahl was reported missing by his estranged wife, Rose Stahl, in May of 2012. She became alarmed after she couldn't reach Stahl for nearly a week and expressed worry that he might have overdosed.

Status: Found

Within a few days after the story hit the media, Stahl emerged from a downtown Los Angeles crack house saying he was fine and that he'd gone into a 30-day inpatient rehab program. That wasn't the end of the drama, however; in June of 2012, Stahl went missing yet again. He apparently decided rehab wasn't for him, so he checked out of the facility and vanished.

#5. Casey Kasem

Former "Top 40" host Casey Kasem's whereabouts are currently unknown. A court ruling on May 12, 2014, granted his daughter, Kerri Kasem, temporary conservatorship for her 82-year-old father. The elder Kasem who suffers from advanced Parkinson's Disease and can no longer talk was in the care of his wife, Kerri's stepmother Jean Kasem, and has not been seen by any of his children for some time. During the trial, Jean's attorney, Craig Marcus, admitted neither he nor his client knew where the ailing Kasem was, but were under the assumption that he had been removed from the country.

Status: Kasem was found in Washington state three days after this story broke. He was with his wife visiting another couple at their home. When asked, they said they "were on vacation."

#6. Andrew Koenig

Actor Andrew Koenig (aka Boner from "Growing Pains") went missing in February of 2010 after traveling to Vancouver, British Columbia. Police in Vancouver launched an investigation into Koenig's disappearance as family and friends' concern grew. According to his parents (including his father, "Star Trek" veteran Walter Koenig), Koenig suffered from depression. In the days before he vanished, he had contacted a close friend to return several items that he had been given as gifts. Koenig was last seen alive on February 14, 2010.

Status: Deceased

On February 25, 2010, Andrew Koenig's body was discovered by friends who were searching Vancouver's Stanley Park. Koenig's father, Walter, confirmed that his son had committed suicide by hanging himself in a heavily wooded area.

#7. Katherine Jackson

Jackson family matriarch Katherine Jackson made headlines on July 21, 2012, when her nephew, Trent Jackson filed a missing persons report. Los Angeles police began investigating, and concerns began to mount about the 82-year-old Jackson's whereabouts.

Status: Found

Less than 24 hours later, police were able to contact Katherine Jackson - and as it turns out, she wasn't ever actually missing. She was hanging out with other family members in Arizona, enjoying the nice weather and even playing a game of Uno. So why did Trent Jackson file a missing person's report in the first place?

The situation may have been related to a Jackson family squabble involving some of Katherine Jackson's children. Several of them were apparently asking that Michael Jackson's estate executors resign. Some of the kids reportedly think that Jacko's will was "fake," and they believe the executors are manipulating things, stressing out Katherine and putting her health in jeopardy.

#9. Margot Kidder

Superman actress Margot Kidder was missing for four days in April of 1996 before she was discovered in a stranger's backyard in Glendale, California. Kidder was found dirty and totally disoriented, suffering what she's described as "the most public freak-out in history." She was delusional, and her two front teeth were missing.

Status: Found

Kidder later admitted she suffered from bipolar disorder, but had refused to take any prescribed medication for the condition. During her breakdown, Kidder said she became increasingly paranoid: at one point, she believed that her first husband and the CIA were were "trying to kill" her.

#9. Jason Mewes

Actor Jason Mewes's troubles with substance abuse were well-documented. In 2001, Mewes failed to appear at a mandatory court hearing stemming from his arrest on heroin charges. A warrant was issued, and Mewes was found to be essentially off the grid.

Status: Found

In April of 2003, Jason Mewes resurfaced, appearing in a Freehold, New Jersey, courtroom to answer to charges. A judge sentenced the Jay and Silent Bob star to mandatory rehab for several months. He was also given probation through 2005.

#10. Sean Flynn

Actor and photojournalist Sean Flynn, the only son of famed actor Errol Flynn, vanished in April of 1970, while on assignment in Cambodia for TIME magazine. It was later discovered that Flynn and a colleague, CBS reporter Dana Stone, were kidnapped by Khmer Rouge guerrillas. Reports indicate that the Khmer Rouge probably held Flynn and Stone captive for up to a year before executing them. Flynn's remains were never found, but he was declared legally dead by his mother, actress Lili Damita, in 1984.

Status: Declared legally dead

In March of 2010, remains were discovered that were believed to be Flynn's in a mass grave in Kampong Cham, Cambodia. Upon further investigation and DNA testing, the remains were determined not to be Flynn's.

#11. James Allan

Glasvegas singer James Allan gave fans (and bandmates) quite a scare when he disappeared for several days in September of 2009. News that Allan had apparently vanished went global after he failed to appear at the Mercury Awards, where Glasvegas was set to perform. Initial reports said that the Scottish singer was ill, but behind the scenes, everyone was worried.

Status:Found

Several Glasvegas dates were canceled in 2009, including a high profile gig at the Coachella music festival. At the time, reports cited Allan's "exhaustion" as the reason, but in March of 2011, Allan admitted in an interview with The Sun that he'd suffered "an overdose."

#12. Harold Holt

Australian Prime Minister Harold Holt vanished more than four decades ago. The 59-year-old Holt was last seen on December 17, 1967, swimming in the rough currants of Cheviot Beach (near Melbourne) with friends. According to witnesses, Holy went into the water despite the dodgy conditions, including a lot of high waves. As he swam farther from shore, friends called out, telling him to turn back but he disappeared, never to be seen again.

Status: Presumed Dead

#13. Kurt Cobain

Nirvana frontman Kurt Cobain died on April 5, 1994, presumably by committing suicide. Before his death, Cobain had bolted from a rehab facility in California and returned to Seattle, Washington, to the house he shared with wife Courtney Love and their young daughter, Frances Bean. There, it is widely believed, Cobain killed himself with a shotgun. His body was discovered on April 8, 1994, and a suicide note was found at the scene (along with the gun).

For several days leading up to his death, Kurt Cobain's whereabouts were unclear. His mother filed a missing persons report on her son, and Courtney Love hired a P.I. to try and track him down. He was spotted by the family's nanny and also at a sporting goods store buying shotgun cartridges. Cobain reportedly tried to disguise his identity while in Seattle, wearing "an overcoat and big sunglasses." Numerous people recognized him, despite the strange get-up.

Status:Deceased

#14 Richey Edwards

Manic Street Preachers guitarist and songwriter Richey Edwards vanished on February 1, 1995. He was last spotted at the Embassy Hotel in London, England. After checking out of the hotel, Edwards apparently drove to his apartment in Cardiff, Wales. The 27 year-old musician's car was discovered more than two weeks later, parked at the Severn View services station.

#15. Philip Taylor Kramer

Philip Taylor Kramer was a musician with the band Iron Butterfly before he pursued a career in aerospace engineering. He went on to found the multimedia company Total Multimedia Inc. By all accounts, Kramer's life was going swimmingly.

In February of 1995, things took a bizarre turn. Just after having made what some believe was a monumental discovery - a math formula "for transmissions at 'faster than light' speed" - Taylor Kramer left his home to pick up a business associate at LAX. He never arrived. Kramer's final calls were strange and unsettling. He called former musician friends, telling him he loved them, and then he called his wife, saying, "Whatever happens, I'll always be with you." His final call? It was to 911. He told the dispatcher, "This is Philip Taylor Kramer, and I am going to kill myself."

A massive search was launched to find Kramer, but years went by with no sign. It seemed the man had simply vanished into thin air. The case of the missing Kramer was featured on a lot of high-profile talk shows and crime shows, and still, no new leads were ever generated.

Status: Dead

Finally, in late May of 1999, skeletal remains later positively identified as those of Philip Taylor Kramer were found inside a minivan in Decker Canyon, just outside of Malibu, California. Given his suicide call to 911 before he vanished, his death was ruled a probable suicide by police - a decision that Kramer's family still disputes. Was Philip Taylor Kramer murdered?

#16. Dorothy Arnold

Wealthy socialite Dorothy Arnold went missing on December 12, 1910, in New York City, after she left her family's home to go shopping. The 25 year-old came from a family that was extremely well-connected and successful - her father was a perfume importer, and her uncle was SCOTUS justice Rufus Wheeler Peckham. Dorothy was busy with the hustle and bustle of the high society season in Manhattan: she needed to find a suitable gown for one of the parties.

Dorothy Arnold did a lot of shopping that day. She was spotted at a candy store purchasing chocolates, and later at a book store on 27th St. and Fifth Avenue. Several friends reported seeing Dorothy while she was out and about, including Gladys King (the last person to see her).

When Dorothy failed to return home that evening, the family became concerned. They put out feelers, hoping to learn, perhaps, that Arnold was simply visiting with friends. However, for some reason, they didn't call the police. Instead, they called a family attorney who conducted his own investigation, trying to determine what happened. Did Dorothy Arnold run away?

#17 J-Kwon

Rapper J-Kwon went missing in February of 2010, sending his record label into a tailspin. The 24 year-old "Tipsy" singer had been missing for nearly a whole month before Gracie Productions issued a statement asking for any and all information on J-Kwon's whereabouts. A special Twitter page, @WhereisJKwon, popped up on social media, and followers left tips and info. People even went door-to-door, trying to find any trace of the rapper, to no avail.

Status: Found Media reports increased, and at some point, J-Kwon saw them. On March 4, 2010, after being off the grid for several weeks, J-Kwon got in touch with Gracie Productions, explaining that he was "taking some time to himself as he sometimes does, not realizing that people would start to worry after a while."

Not realizing?! Someone goes missing for a whole month and he doesn't think anyone will worry? What gives? Interestingly enough, J-Kwon's fourth studio album was released less than three weeks later. Publicity stunt, anyone?

Status: Presumed dead

Richey Edwards's body was never found, but in November of 2008 - more than 13 years after his disappearance - his parents had him officially declared as "presumed dead." The mystery surrounding Edwards continues to this day. No one seems to know exactly what happened, and reported sightings of Edwards are ongoing. Is Richey Edwards actually dead? Did he just decide to vanish, or did he possibly take his own life?