Prosecutors in the US state of Massachusetts have dropped a criminal case against Kevin Spacey.
But indecent assault and battery charges were dropped on Wednesday after the accuser refused to testify about a missing phone, which the defence said could prove the actor's innocence.
Mr Spacey has faced several sexual misconduct accusations but this was the only one to result in a criminal case.
The claims date back to three years ago, when the accuser says Mr Spacey bought him alcohol and groped him at a bar on the island of Nantucket, Massachusetts.
The accuser was ordered to take to the stand this month after he said he lost the phone he had used on the night of the alleged assault.
Mr Spacey's lawyers had accused the man of deleting text messages and said the phone could be used to prove their client's innocence.
The allegations came after another actor accused a then 26-year-old Mr Spacey of climbing on top of him on a bed when he was just 14.
Mr Spacey apologised for any inappropriate conduct, which he said he could not remember.
Amid multiple other allegations of misconduct, the Oscar-winning actor was later dropped from Netflix series House of Cards and had his scenes edited out of the film All the Money in the World.
The Nantucket case was one of few criminal cases to be brought as a result of Hollywood's #MeToo scandal.